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

SERl'UI,ACEA.] MOLLUSCA. Section I I.-Shells attache<l to e.i:tmneous boclies tltefr -wltole lt:ngtlt. nem·l!J 5. SEl\l'UI,A 'l'l\!QUETR,\ pi J V f 1 r. • . , • ~ t • , "'· Serpulit li·u¡uetra, First Ed ¡ 1\ 9 f l " p 16 1 ,-, ¡ f' 1 -- D ., · ~, · , ¡¡ ; ennant, IV, p. ¡ , ' p . ; 1 ' • ¡¡ / ; ono,·an, pi. 95. Mont r. ¡ 1 l\i 1 , agu, p. ;, ; ' aton and llac ,ctt, p. 2H; Flcming, Edin. Ene,. VII 6 'l' l . 11 . · \ ) ' 'p. 7 · uuc ,ll 1cnng 1ts w 1ole \cnn-th stro . 1 . o , ng, opaque, 1rrcgularly contort el ; somctuncs ncarly st rain-ht or ¡· ¡ ¡ íl . . . o • s ig ll y exous · w1th transrerse wnnklcs, ancl prorided with a e 1 ¡ d ¡ ' • . . . en ra orsa carma, wluch III somc rnstanccs bccomes nearly ob ¡ t t 1 ¡ . so e e a t 1e arger end of the tubc; m some specimens the ridg · ¡ t d d . e 1s e eva e , an 111 others depresscd; sprcadin" widcly at ti b . o 1e ase ; aperture sublnangular; colour ycllowish-white sometim f fi d . , · es o a me re , ornnge, c1lron, or rose-colour. Found on many of the British and I rish coasts, adhering to old shells, stones, &c. 6. SEnPULA vEnmcULAms, pl. LV, f. 2, 3. Se,'jrnlct ve1·mic11la1·is, First Ed., pl. 2, f. 2, 3; Pennant, P· 146, pi. 91, f. 158; Montagu, p. 509; Maton and Rackett, p. 2•10; Brown, Ency. E<linensis, II, p. 556, pl. 55, f. 12; Ib., Ency. Brit., VI, p. 468. Tube strong, adhering its whole length, cylindrical, white, trans1·ersely wrinkled, contorted in various directions, tapering gradually to a fine point; aperturc circular. Common on most oí thc British and Irish coasts. 7. SEnPULA sEnnuLATA, pi. LV, f. 8. Se1pula serrulata, First Ed., pl. 2, f. 8; Fleming, Edin. Ency., VII, p. 67, pl. 204, f. 8. Tubc bluish-whitc, smooth, glossy, diaphanous, adhering, sublriangular, slightly contorted; base sprcacling prctty widcly, tapering ralher abruptly to a fine point; back with an clcl'atccl, thin, sharp ridge, fincly but irregularly scrralecl, and cqual in dimcnsions to the brcadlh of the tube; apcrture largc, nearly orbicular, with the tooth-like tcrmination of the carina project- ing ovcr it. Discovcred by Dr. Fleming, in deep water, adhering to stone~, on the coast of Zctland ; ancl I found it plcntiful in Rothcsay Bay, in company with my fricnd James Smith, Esq., of Jorclan Hill, near Glasgow, whilc on a dredging cxcursion. The shell is so transparent, that the animal can be distinctly scen through it; ancl by the aicl of a strong lens the pulsation may be obscrrec\. GENUS 2.-Srmonms.-Lamarck. Shell consistin" of a testaceous tube, spirally twisted into an orbicular form 0 ~ a horizontal plane, depressed, and aclhering below; the aperture terminal, rounded, or angular• I. Srmonms NAUTILOIDES, pi. LVI, f. 45, Spi1·01•bis Naut-iloidcs, First Ecl., pl. 1, f. 45; Lamarck, V, P· 359; Sci·pula spfrorbis, Donovan, I, pi. 9, f. l, 2; Montagu, p. 498 ; Maten ancl Rackett, P· 241. Shell opaque, white, much clepresscd _; with t~uee or four lateral volutions, rounded above, ancl sl1ghtly wrmkled trans- versely; thc central volution lower than thc others, and . . . b íl t d expanded · apertura sub- formmg an umb1hcus ; ase a , an · ' trianguiai'. 123 Common on most of the British and Irish coasts, adhering to alga: and other marine plants, as well as to sienes and shells. A lusus of this shcll is not unfrequent with an ercct aperture, ancl ene or two volutions turning a little spirally upwards. 2. Srmonn1s srm1LLUM, pi. LVI, f. 41, 42, 53, 54. Spfro1·bis spfrillum, First Ecl., pi. 1, f. 41, 42, 53, 54; Lamarck, V, p. 359; Fleming, Edin. Eucy., VII, p. 68; Se1·- pula spfrillmn, Monlagu, p. 499; Pulteney, Hutch. Dorset, p. 52, pi. 19, f. 27 ; Maton and Rackett, p. 240. Shell subdepressed, subpellucid, glossy, whilc; with two or threc subcylindrical, slightly wrinklecl, somcwhat lateral volu- tions; central volution lower than thc others, forming an um- bilicus, and pcrvious in some instances; aperlure subtriangular, and not unfrequcntly turned upwarcls; attached by thc smaller end. Diameter not more than an cighth of an inch. Fig. 53, 54, vm·., Spiroi·bis sinist1·osa, Montagu, p. 504. Sometimes the ,·olutions wincl spirally upen each other. Distinguished from S. Nautiloidcs by its glossy aspee!, its more cylindrical form, and not spreacling at thc base. Gcnerally founcl adhering to marine plants, corallincs, and Crustacea, ancl not to stones. 3. SPIRORDIS MINUTUS, pi. LVI, f. 51. Spiro1·bis minutus, First Ecl., pi. l, f. 61; Flcming, Edin. Ency., VII, p. 68, pi. 205, f, 2; Se11nda minuta, Montngu, p, 505; Maton and Hackett, p. 241. Shell heteroclitical, depressed, yellowish-whitc; with two or three lateral, trnnsversely wrink\ed volutions, and a dorsnl carina. Diametcr a quarler of a line. Found ndhering lo corallines, on the Devonshire and Nor- thumberlancl coa.sis. 4. Srmonms UETEnosTnoPnus, pi. LVI, f. 55, Spiroi·bis hetc1·ostropfms, First Ed., pi. 1, f. 55; Flcming, Edin. Ency., VII, p. 68, pi. 205, f. l ; &"1')J1tla fwtc1·ostroplw, Montagu, p, 503; i\faton and Rackctt, p. 242. Shcll strong, clu\l white; co11sisling of two or lhrce hctcro- clitical volutions, with threc lateral, spiral ridges, crossed by strong wrinklcs; base ílat, somcwhat spreacling; aperlurc orbi- cular. Diameter nota line. Found adhering to oysters and other shclls, and to alga:, on many of the British and Irish coasts. 5. Srmonms UETEnocLJTtcus, pi. LVI, f . 57. Spfrorbis hctcroclit-ic-us, First Ed., pi. 1, f. 57. Shell nearly cylindrical, thick, white, opaque, smoolh; with four volutions, the outcr one ,•ery largc, internal enes small, forming a large and deep umbilicus; apcrturc ncarly orbicular, and placed below thc margin of the outcr volution, Diamcter one-tcnth of an inch. Founcl by my late friend General Bingham, adhering to the roots of alga:, at Dunbar. 6. SPIR0RDIS GRANULATUS, pi. LVI, f. 47. Spiro1·bis gmnulatus, First Ed., pi. 1, f. 47; Fleming, Edin. Ency., VII, p. 68; Sei'jrnla granulata, Montagu, P· 600; Donovan, III, pl. 100. Shell subdepressed, white, opaque; with two volutions, dceply grooved spirally, and transvcrsely wrinkl?d, mor~ strongly so in the furrows, umbilicated; aperture orb1cular, w1th an annular tip. Diamcter an eighth of an inch.