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

24 :\IOLLUSCA. ['f1tACIIELIPODA, roundcd -above, a1Hl slightly contracled below, insi<le of n fine purple hue; ouler lip thin, slightly reílected; inner lip broad, llattened ns in Haliotis, an<l white; outsi<lc covercd with a rather smooth fuscous epidermis. Lcnglh about a lcnth of an inch, Found by Dr. Lcach on the Dcvonshirc const. 3. G. Otis; Heli:,; apc,·t,wa patc11tcssi11ue, \Valker, J\'Ii11. Sh., pi. J, f. 17 ; llelix Otis, Turton, Conch. Dic., p, 70; Ve- luti11a Otis, Flcming, Ilrit. An., p. 326. Shell transvcrscly oblong; with lhrcc smooth, sen1itranspnrc11f, glossy volulions; apcrturc transvcrsely oblong; outcr lip tliin ; inncr lip a littlc thickcncd an<l ílattish. FAMILY V~IANTIIINI,\. Animal capable of raising itself in Lhe water, and íloating. GENUS 30.-IANTIIINA,-Lamarck. Animal provided with a visiclc, atlached to its foot, by mcans of which it cnn raise ilsclf lo fhc surfacc of thc water, and íloal on Lho occan. Shell vcnlricosc, subglobosc, anti subconic; thin, diaph:mou~, and briltlc; npcrlurc sublriangular, produced al ils lowcr region anti nl ils' oulcr sido, bul is considcrably roundcd al Lhe anglo formcd by thc union of thc uppcr and lower ha!ves of Lhc outcr lip; columclla straight, ami clongatc<I bcyond thc base of thc oulcr lip, with thc inncr lip reflcclcd ovcr il; lhc outcr lip forme<! into an angular siuus, by the projcclion of ifs uppcr half. l. I. comnmnis, pi. VIII, f. l, 2.-Firsl E1l., pi. 51, f. 1, 2; lm1thi1w commmiis, T..amnrck, VI, pt. 2nd, p. 206; Flcming, Ilrif. An., p. 326; Im1thim,fragilis, Ency. Mcfh.;pl.-156, f. 1, a, b; lleli.,: icmthc11a, Gmclin, Linn6, 36<15, No. 103; llcli.-,: innthiiw, Brown, \Vcrncriau Mcmoirs, II, p. 525; lb,, Ency. 13rit., VI, p. ,wo, pi. 155, f. 6. Shcll subco11ic, umbilicale; body cxtremcly largo; spirc vcry small, consisting of thrcc somewhat inílatcd volulions, scparatccl 1.,y a dccp suture, lcrminating in an obtuso apcx, on thc pinirnclc of which is inscrlcd a vcry small bead-likc proccss, of a pc:irla- ccous luslrc; thc centre of thc body produccd into a rounded, subcarinalcd ridgc; base produced ; apcrturc subtriangular, smooth, allll glossy wilhiu, much prodnccd bclow; outcr lip grcatly cxpamlcd, Lhin, ami nculc; inncr lip slraight, somewhat rcílcctcd orcr thc small uml.,ilicus; wholc shcll co\'crcd with u1ululous, rnthcr widc spiral siria:, ami crosscd by strong irregu- lar slriru, following thc dircction of thc linos of growlh; colour of a rcd,lish purplc, or lilac, thc superior rnlntions whitish. Lcngth upwards of an inch; brcadth ncarly an inch and a c¡nartcr. Many lnmdrcds of this shcll wcrc fonnd ali\'c al Portrush, counly of Antrim, Ircland, hy .11-Irs. Clcwlow ami i\íiss Kclly, of 13clfast, aftcr n storm. Somo of thcm floated on thc surfocc of thc sea, all(l wcre buoycd up by thc rcticulatcd, viscous mcm- branc which is alfachcd fo thc foot of thc animal. It was aftcr- w:irds fomul a\i\'c in Ilantry 13ay, by Miss Hutchins, all(I has sincc bccn mct with 011 various parfs of Lhc coast of Ireland, ntlll \Vales. 2. l. exigua, pl. VIII, f. 16, l i; lm1tl1i1w c.i-igiw, I.amarck, VJ, pf, 2nd, p. 206; E1wy. :i\Iclhod., pl. -156, f. 2, "• &. Shcll ovale-conical, rnry thin, s11bhyali11c, with four roundc1l rnlutions; spirc pro<lucccl, lcrminating in a subaculc apcx, ami clcgantly striatcd longitudinally; apcrturc triangular; pillar lip curvc<l, ami lcrminaling in a produccd, oblic¡uc poinl; thc whole · shcll of a l.,caufiful rcddish violct colour. Lcngth two linos and a half; brcadth lwo linos. Found by my fricnd H. .J. Shnttleworth, Ese¡., al Conomaura, wcsl coast of Ircland. ' FAMILY VI.-NElllTACEA, Shclls subglobose, or oval; dcstitufc of a columclla; thc oufcr lip margincd ami transverso ; apcrlurc cnclosed by an opcrcu- lmn. Thcy inhabit both thc sea ami fr csh watcrs. GENUS 31,-NA TICA.-Adamson. Shcll subglobosc, oval, or oblong; umbilicatc; spirc shorl, sometimos vcry shorl, with thc apcx vcry rarcly poinLCll; apcr- lurc largo, semicircular, ami very sclclom_cffusc; outcr lip sharp cdgcd, smooth within; columcllar lip oblique, dcstilute of lccth, gcnerally thickcncd, and some timos sprcad thickly ovcr thc um- bilicus; umbilicus usually largo, having a spiral callosity within, which somclimcs incrcnscs so as lo co1•cr thc umbilicus; it is somctimes ycry small, ami in a fcw inslanccs ncarly obsolctc, so much Eo, ás lo he harclly perceptible; opcrculum tcstaceous in somo spccics, and horny in othcrs. l. N.111011ilifam, pi. XIII, f. I, 2, 8, ami 10.-First Ecl., pi. 43, f. 1, 2, 8, a111I IO; 1YaticCL ,nonilifera, Lamarck, J\11. San. Vcrt., VI, pi. 2ml, p. 196; Forbes, Mal. Mon., p, 29; N.gla1,- ci11a, Fleming, Brit. An., p. 319; Ncril<L glm1ciua, Donovan, Ilrit. Sh., I, pi. 20, f. 1; Ilrown, Ency. Ilrit., VI, p. 462; Matou and Rackct , Linn. Tr., VIII, p. ; Monl:igu, Test. Brit., p. •169; Turton, Dril. Fa., p. 195. Shcll suhglobosc, strong, smooth, glossy; spire small, consisl- ing of six somcwhat inílatcd, rapidly dccrcasing volutions, slighlly flatlcncd abol'c, ancl wcll <lcfincd by thc suture ; bocly vcry largo in proporfion to the spirc, ancl vcnlricosc; apcr lurc subol'al an<I sublunatc; oufcr lip thin ami oven, ancl considcrably protrudcd at ifs juncturc with thc bocly; pillar lip thick, callous, broaclly sprca<l ovcr thc columclla abovc, narrowccl bcncath, ami slightly rcflcctc<l o,·cr thc umbilicus, which is largc, clccp, ancl strialcd intcrnally; whole shcll co1·crcd with mi1111lc, 11carly obsolclc, irregular, longitudinal siria), which are only pcrccptil,lc by thc aid of a lcns; colour· sometimos li\'icl, or purplish, but for thc mo_sl part fcrruginous, or chcstnut, with a series of longitudinal purplish-brown sfrcaks on thc superior porlion of thc volulions ; opcrculum horny, vcry thin, lransparcnf, ami claslic, wifh clircr- gcnl striro. Thc young shcll, f. 1, 2, is gcncrally ornamcntc<l with a series of slrcaks, or gir<lles of spots, or zig-zag linc,. Sizc varying from an inch ami a half lo two inchcs in lcngth; and from an inch and a quarfcr fo an inch ami a half in cliamctc r. Founcl on most of thc Ilri tish ami Irish coasl~, mu! sccms lo be a dccp water spccic;;. Mr. Nicol slalcs that he fo111ul it buricd in sane!, at 1·ery low tidcs, in thc Frilh of Forlh. l\Ir. Forbcs, in his "l\Ialacologia .11Ioncnsis," say, , thc hody of this specics is "minutcly st riatc,I spirally.'' I h:wc cxamincd specimcns from almosl C\'cry co:isl in thc kingdom, allll han· ncvcr mcf with a si ngle ,pccimcn wilh this cliaral'fl'T,