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

22 MOLLUSCA, [TnACIIEl.ll'OD,\. 4. J . lo11giuscula, pi. Vlll, f. 8.-:-Firsl E<l., pi. 51, f. 8; Bucci11um longiusculum, Walker, Mm. Sh., f. G0; A<lams, Micros., pi. 14, ,f. 26. '<l <l Shell lapcr; consisting of six smooth, glossy, pclluc, 'gra ~- 11 • olutions well <lefine<l by the suture, an<l ternu- a Y. tap~rmg v cute np~x. apcrlurc oblong, slightly contraclccl nnt111g m an a ' . . 11 abovc, ami wi<lcnc<l bencath ; outcr hp th111, even ; colume a smootli, with a tooth-like process ncar ils centre. Length an eighth of an inch; brcaclth not half its length. Found in Faversham Creek. r,, J. obt11sa, pi. IX, f. 38.-First Ed., pi. 50, f. 38. . Shcll subcylindrical; wilh five while, glossy, somewhat lunml, an<l gra<lually tapcring volutions, terminaling in an o~tuse apex; with five )on,,itudinal ribs; nperture subrolund, shghtly con- tracted abov:; outcr lip plain; columclla with n prominent, ohliqne, tooth-liko process near ils centre. Length an eighth of nn inch ; brea<lth not lmlf its lcngth. Foun<l nt Dunbar, by General Ilingham. G. J . ¡mllits, pi. IX, f. 11.-First Ed., pi. 50, f. l 1. Shcll subconic; wilh six slightly rounclecl volnlions, tcrmi- nating in nn obluse npex; lhc wholc shell invesled by fivc llat spirnl ribs ; nperlure subovate, slightly contracled nbove; outer lip plain; columella furnishecl with a sharp tooth-like proccss near ils centre ; whole shcll of a pale flcsh C'olom, nllll nol glossy. Found by me 011 the bcach nt Mo1ílrose. 7. J. C1lb«, pi. VIII, f. 18.-Firsl Ed., pi. 51, f. 18; Volutc, 11lba, Montngu, p. 235; Jh., Sup., p. 101; Wnlkcr, l\'Iin. Sh., f. Gl; Adams, Micros., pi. 14, f. 27 ; Mnton nncl Rnckct, Linn. Trnns., VIII, p. 130; Turlon, Brit. Fnunn., p. 170. Shell opaque allll glossy; with four finely slriatecl rnlut.ions; npcrture long, narro,,·, straitened abo,•e, :uul rounded beneath. Length n tcnth of an inch. Fouml 11t Sandwich 111111 Shepey lsland. 8. ,l. illsculptc,; Tw·bo i11.,·c1tlptus, Monlagu, Sup,, p, 129; Otlostomia. ·i11sc11lptct, Fleming, Ilrit. An., p. 31 O, "Shcll subpellucid, white, and taper; with fivc or six mo<le- rately convex volulions, finely nllll regularly strialed throughout, in a spiral direclion; npex oblusely pointed; aperture subovale; pillnr lip with a faint dnplicature, forming a submnbilicus, an<l fnrnished with n snrnll tooth. Length one-cighth of nn inch; breaclth one-third its length. u This rnrc shcll, from the consl of Devon, must nol be con- founclecl with the Tm·bo semist1·iatm, ( Rissoa. semisfriatm, p. 11, pi. IX, f. 3,) which is rnstly broader in proportion, ancl is desti- tute of n tooth."-Montngu. 9. J. bidc11t"tn, pi. VIII, f. 7-Firsl Ed., pi.51, f. 7; Voluta bidc11tata, Montagn, Sup., p. 100, pi. 30, f. 2. Shell slrong, thick, conic, smooth, glossy white; wilh six or se,·en volntions, tapering abruptly to an acule apcx; a fcw dis- tan!, longilmlinnl, wrinklcs undulale the suture; body larg!!, occupying two-thirds the length of the shell; apcrture narrow, somcwhat oblique, contracle<I above, ami rounded bclow; ontcr lip thick, plain; columella much thickenecl, and folcling back forms a submnbilicns bchind, ancl proviclecl with thrce loolh-like plications in front. Lcngth a qnarler of :111 inch; brcadth about hnlf its lcngth. Fouml plcntifolly on thc sonth const of De,·onshirr; nml al Dunhar, frith oí Forth. S11bdivisio11 1 I.- With tccth 011 the outc,• lip, 10. J. clc11t·ic1tlata, pi. VIII, f. 6.-First Etl., pi, 51, f. 6; Voluta. dc11lic11lata, Montagn, p. 234, pi. 20, f. 2; Walker, Min. Sh., f. 50 and f. 53, young ; Turton, Brit. Fa., p. 170. Shell subcylimlrical; wilh se,·cn or eight gradunlly tapcring, flat, semipellncid volutions, lerminating in an ncnte apex; body large, in proporlion to the size of lhe spire; aperlure oblong· o,·al, nearly half the Jength of the shell; outer lip furnishe<l with two or thrce tuberclcs near the margin, ancl frequently with three or four whitc denticulations within the margin of the aperture ; cohnnclla provi<le<l wilh three or four obli~ue white plic:c, which are much produced, ancl ha,·e n toolh-hke appearance. Length ncarly half an inch ; breadth not a quarter. This spccies is snbject to some variety in the denticulations on the outer lip ; some have more and others less, ancl young shells are destiluté of them; the plications on the columclla also vary from lwo to four, but the usual nmnber is thrce. Found on the shore al Plymouth, and other parts of the south Devonshire const ; al Barnstable allll I sracomb, in the north ; near Aberavon, '\,Vales; nnd al Southamplon; Dublin Bay, I relaml ; and Dunbar, Frith of Forlh. l I. J. r¡ui11q11cde11s, pi. VIII, f. I 1.-First E<l., pi. :í 1, f. 11. Shell strong, thick, conic, smooth, white, allll opaque ; with six Yolutions; spire lapering abruptly, nnd terminaling in nn obtuse npex; apcrture a little oblique, narrow, contracted above, ami rounded below; ouler lip thin, provided internally with five tooth-like processes, tho uppcr onc largest; columella slightly thickened, ancl furnished with two strong, acnte, prominent tceth-like processes in front, the upper one cleft. Lcngth a c¡unrter of :m inch ; brea<lth about half its length. 1 found this shell on thc beaeh at Prestonp:111s, nine miles easl of E<linbnrgh. GENUS 27.-ComNIA-Drown. Shcll elongnted, tapering to both extremit.ies; spire of rnedimn )cngth; aperture elongated allll narrow; columella furnishcd with se,·eral oblique, spirnl grooves, or fol<ls, nncl subcanaliculat e al the base. l. C. hgali11a, pi. VIII, f. 9.-Firsl Ed., pi. 51, f. 9; Jaminia hgali1w; Voluta hgali11c1, Monlngn, Sup., p. 101. Shell with six flat, pellucicl, smooth volutions, tnpering lo :111 obtuse apcx, allll rnry indistinctly <lcfined by the exlremely small line of the snlure; botly occupying ahoul half lhc lenglh of the shcll; apcrlure much clongatcd alHI narrow, a lilllc con• trncled above; base truncated an<l canaliculnted; onter lip smooth, plnin, ami sharp nt thc edgc; columclla with se,·cn or eight. fine, oblique, lhread-like plications. Lenglh a quartcr of an inch; breadth not more thnn one-third ils length. Fonnd nenr Drmbar, by Captain Lnskey. FAMILY IV,-i\IACllOSTO~I,\ . Shells auriform, with a Yery wide sprcading apcrlurc, ancl thc• mnrgins clirnnitrd ; clr~ti tnl <' cofa rolunll•lla nncl npNcnlum.