Illustrations of the recent conchology of Great Britain and Ireland, with the description and localities of all the species, marine, land and fresh water

Isvo1,un:.] MOLLUSCA. HI ncnt th:m thc othcrs i hcncath thesc is a well.dcfined suture; thcse rid,.cs :m• cro,sc'.I hy mimcro_u~ ,·cry li1'.('• warC'd, obliquely longitudinal, uearly ~b- ,ok•_tc stn:c i colonr hrnl , rl•<ld1sh citron, or pnrplish, strcakcd with lonoi. rn1h_ 11 :1l brn:id, warcd ~•l ut~hcs of pinki,h •·<'d; thcsc are more regular a~d ¡~1,11nct on thc hasal nh o( cach rnlntion, forming an clcgant spiral gi rdlc lro111 t h_c ~ase ~o thc apex ; apertnrc somewhat comprcssed ami nngu- lat,•t!; lllfü\c: highly pcarlacco115; base llattish, with conccntric rid~cs, ,·rossc,I by obsolctc di,·crgcnt st ri:u or lincs of growth, gcnerally ;f a palcr ~olou~ th:111 thc_ rest of the shcll, anti usnally clcstitntc of spots; ontcr hp thm, mncr hp a littlc rcllccted a1Hl thickcncd, somcwhat con- cave bchiml, with a slight notch at its jn11ction with the outer lip. Len!!th and breadth usually about :111 incl,, but we fon11d it onc inch and thr~e- cighths in dimcn~ions, in Dnblin llay and Portmarnock, Ircland. It in- habits thc coasts of Cornwall, South Dcvon, and Tcnby, Wales; lloth- say and Loch Rielan, Scotland. Fig,-. l i ami 18.-A rnricty prc,cnted to us by Dr Leach, who ob- tained it from Gcorgc Lyons, Esq. of' Tcnby, ,vales, where it is not un- common. Figs. 21 and 22.-A be:mtiful smooth ,·aricty, drcdgc<l in dccp water off Sunderland, by l\lr Dixon of Bishopwearmouth. In Lady Jardinc's Cahinct. Figs. 24 and 29.-Another smooth variety, drcdged in dcep water off the county of Down, Ircland. 9. 1'. discrcpa11s, pi. XI, f. 20 :tll(I 23.-First Ed., pi. 45, f. 20 ami 23; Ilrown, '\'crncrian i\Icmoirs, II, p. 501, pi. 24, f.•!, •t. Shcll conic, with se,•cn rounded \'Olutions, wcll-delincd by a hollow, broad, ancl dcep suture, and tcrminating in a pointed apcx; thc whole shcll covcred with somewhat obsolete spiral ridges ; a deep groo,·e cmanatcs from thc centre of thc outcr lip, allll runs spirally to thc apcx in thc mid- dlc of the volutious ; aperturc subquadrangular; nacrcous within; cir- cumfcrencc at thc base ncarly nn inch, hcighth sevcn-cighths. This spccics has much the aspcct of 'l'rocl111s Zi:yp!ti1111s, but differs from it in the decp spiral groove; it is also shorter in proportion to the breadth at the base, nnd more obtuse at the npex. One spccimcn only of this shcll wns found at Holywood, in Bdfast Lounh, bv l\liss Templcton of llclfast, nnd was in her Cabinet. 10. '1': pr,pillosus, pi. XI, f. J;), 14.-First Ed., pi. 45, f. 13, 14; Da Costa, p. 38, pi. 3, f. 3; Donov:rn, Ilrit. Sh., pi. 127; llrown, Werne- rian l\Icmoirs, II, p. 519; lb., Ency. llrit., VI, p. 452; l'lcming, Brit. i\11., p. 323; Troc/111s lc1111is, Montagu, p. 275, pi. 10, f. 3. Sht:11 conic, thin, fragile; with cight slightly inílnted volutions, tcrminat- ing in a fine pointed apcx, nnd scparnted hy a ,·cry slcndcr suture; wholc shell orn:nncntcd with numcrous regular series of papillcse, spiral zones, cach scparatcd by a groovc, in which is placccl a raiscd, central, spiral linc, crosscd by very el ose and minute longitudinal, ncnrly obsolcte stri:u; thc ,·olutions are dclined by a lnrger and more clerntccl zonc of papillru at thcir hase, which on the body forms a distinct kccl; base somewhat tmnid, with muncrous spiral groovcs nncl ridgcs, on which latter the 1m- pillru are lcss distinct thnn abovc; thc wholc are crosscd by numerous, more obvious, divcrgent strire; apcrtme wide, quadrangular, grooved, ancl nacrccl within; outer lip very thin; colnmella thick, with an obsolcte plication nenr its bast', wht'rc it is slightly rellcctcd, with a concavity be- himl; colour citron, or pinkish-brown, the zones on che base studdcd with rather regular, oblong, or arrow-shapcd, rcddish-brown spots. Lennth an inch and a quarter; breadth rather less. l'ound at Pool nnd ,vc;mouth, Dorsctshire; Cornwall; north coast of Dcvoushirc, from whencc wc obtained thc splenc\id specimens which we havc figurecl, mea- suring an inch and a half in length ancl brt'n<lth, found also in Dnblin llay, ancl m dct'p water off Bray, lrclnnd. 11. '1'. slriatus, pi. XI, f. 25, 26.-First Ed., pi. 45, f. 25, 26; T. cry- 1!11•olcuco.,, Brown, Ency. I3i-it., VI, p. 452; Turton's Linné, V, p. 463; Larnarck, VII, p. 30; Trocl111s slriatus, i\Iontagu, p. 2i8; Flerning, I3rit. An., p. 323; 'l'roc/111.,co1iic11s, Donovan, Brit. Sh., pi. 155, f. 1; Turton, Brit. Fau., p. 177; 'l'rochus 71111·v11.,, Da Costa, p. •H. Shcll conic, strong, with six flat rnlutions, harcl ly dclined by the su- ture, a11d tapering to a fine point, with cight or 1¡ine strong spiral striru 011 cach volution, intcrscclt'<l by vcry minute longitudinnl striru, mosl con- spicuous 011 the bocly ami bnse, which is l_lattcnecl nnd somewl~at con- cave with circular ridges; cincrcous, or rcdd1sh llesh-colourcd, w,th l:irgc Ion.,itudinal, intcrrnptccl, zigzag dull crimson, or pnrplish-hrown cloucls; 1,ro:c\ in some specimens and narrow in othcrs; :1perturc obliqucly quad- rangular, penrlaccous within, except nt the mnrgin of the outer lip, which is rather strong for its sizc ; columclla thick, n lit tic rt'llcctcd nbo\'c awl narrower bt'ncath, with a slight conca\'ity behind. Lcngth three-cighths of an inch; breadth nenrly thc sume. Fouml in sand at Falmouth, Cornwall; Salcomb Ilay, De\'onshirt', and Pool, Dorsctshire. It is a rarc British shcll. 12. '1'. aig,ws, pi. XI, f. 27, 28.-First Ed., pi. 45, t'. 27, 28; i\1011- tagu, p. 2ii ; Turton, l3rit. Fauna, p. 1 i7 ; '1'rocl111s co1111/11s, Da Costa, p. 40, pi. 2, f. 4, 4; l3rown, Ency. llrit., VI, p. 452; Donovan, Brit. Sh., I, pi. ~. f. 2; Lamarck, VII, p. 24; Trocl111s cJ·aspcra{us, Peunant, Brit. Zoo\., lV, p. 126, No. 105. Shcll conic, strong, with six llat product'd Yolutions, separatcd by a strong spiral belt at thc bnse of cach, and ter111i11nting in a fine poiut(•cl apcx, cach \'Olutiou ornamcntNI with four or lil'c well-clcfincc\ spirnl c r,·- natecl ridges, which bcing cut diagonally with stroug s tri:c, gi,·c t hcm tli,· appearancc of twistcd con!, with decp intervening groovcs, crosscd h~· s trong obliquc striru ; bnse slightly roundctl, with s trong circular ridgl'"• striated in the same dircction, and crossed by dil·ergcnt, nea.-ly obsolct1• stria.:; aperture oblic¡ucly quadrangular, whitish, pcarly within; Olllcr lip strong ; columella thickcncd and pcarlaccous, with an obsolctc tooth-likc proccss ncar its base; colour various, cinereous, brown, dull purplish. brown, sometimt's reddish, nnd spotted with whitc; apcx almost constant- ly of a dccp crimson, which fr<'qucutly t'xtends to the sccond rnlnt ion; somet imes the spiral zonc nt thc base of thc ,·olutions i~ ornameutcd witli sqnnre crimson spots. Lcngth rarcly threc-l' ighths of an inch ; bren<lth ;, quartcr of an inch. This nncl the prcccding species havc not 11nfrcquc11tly becn co11fo1111cl1!d, but mny at once be <listinguishc<l from thc '1'. slriallls hy its bcing 111uch more produced, in the spirnl ridgt's being crenntcd, thc base bcin¡; ro111ulccl, thc tip ol' thc spirc almost invariably crimson, ancl thc inside of thc apcr- ture vc1·y slightly nacrcd. Found 011 thc Sussex and DeYonshirc coasts, and al Treryn Corn, ncar the Land's End, Cornwall. l\Iontngu fonnd it 011 the shorc bctwcen ,v\'Y· mouth and Ponland. lt is a rarc mul very local llritish specit's. 13. '1'. cmw,s, pi. XI, f. G, 7.-FirstEcl., pi. ,J5, C ü, í; l'llontagu, p. 281 ¡ Brown, Ency. Brit., VI, .p. 452; lb., "'erncrian Me111oir~, 11, p. 519; 'furton, Bi-it. Fan., J>· 1i7; Fleming, Ilrit. i\n., p. :122 ¡ '1'11rbo lincalll.,, Da Costa, p. 100, pi. 6, f. 7 ; Donornn, Brit. Sh., 11, pi, i l. Shcll subconic, very thick 1111d strong, wi th Jive ronndccl vol11tio11s, separatcd by a wt'll-delinecl suture, apex pointl'd, but not slmrp; base somewhat produccd nnd rounded ut its cdgc ¡ npcrture pt'arlnccous within; suborbicular, somcwhat nngulatcd at the jn11ction of' thc outcr lip uud pillar, nnd roundccl ncxt thc outsicle; outer lip acute, its inner nmrgin dark purplish brown ; colnmelln smooth, whitt', or nacred, with a blunt tooth-likc process below its centre; and n sli¡;ht groovc bchincl thc co- lnmella, and in others it is slightly subumbilicntc; outside coarse ami wrinkled; colour cinercous, or light fawn, co,·crcd with fine, closc-sct, zigzag lines of purplish-brown, nncl sometime., of u blackish purplc; a whitc semilunar patch covcrs nt'arly half of thc bnse. Lcngth nn i11cl1, breadth somewhat lcss. This spccit's is subject to sorne variation in shnpe; sorne urc mure conic, and the rnlutions more roundcd and tumicl than otht'rs. Found on thc consts of Cornwall, Dcvonshire, Hnmpshirc, Cucrnar- vonshire, Wales; Dublin I3ay, Killough, nnd plcntiful 011 thc rocks ut Limerick, I rcland. FA~IIl,Y If,-SCALARIDES. Shell devoid of plaits or folds on the columclla; margins of the apcrlure united in a circular form. GENUS 21.-DELPHIONOIDEA.-Brown. Spire depressed, surface smooth, divestcd of spinous proccsse~; aperturc orbicular, or nearly _so, ami not envcloping thc body \"O· lution. S11bdivisio11 1.- Vo/utions De:,,/ral. l. D. U11ispirala, pi. VllI, f. 32, 33.-First Ed., pl. 51, f. 32, 33. llclfr 1111ispiralis; i\lontagu, p. 443; i\laton and Hacket, Linn. Trans., VllI, p. 201; Wnlker, Minute Shells, f. 27. Shell glossy whitc an<l opnque, with onc volulioo, umbilicate on both sides; nperture orbicular. Dinmcter scarcely a line. Fo1111cl nt S1111dwicl1, and is very rare.