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

42 MOLLUSCA. ['fRACHELll'ODA The V. pal11st1·is may be casily clistinguishcd by thc ll1rcc distinct, whitc tecth, which are situatc within thc uppcr an<l truncatc<l portion of thc aperturc. Found in marshy situations, in thc ncighhourhoo<l of Scar- horough; Wimble<lon Common; ncar Twizil Housc, Northum- bcrland, thc scat of J. P. Selby, Esq.; ami in Irclaml, in many localilics throughout thc Countics of Down an<l Antrim, Port• arlinglon, County of Kildarc, an<l Finnoc, County of Tippcrary; and at Ilallantrac, Ayrshirc, Scolland. (j. VE!lTIGO ALPESTI\IS, pi. XVIII, f. 40. Vci·tigo Alpcstris, Férussac, MSS.; Al<lcr, Mag. Zoo!. an<l Bot,, II, p. 112. Shell subcylindrical, pcllucid, of a pale yellowish horn-colour; ,pire provi<lcd with four somcwhat ventricose volutions, gra- dually tapcring to a rathcr obtuse apex ; wholc surface covcred with longitudinal, minute striro ; apcrturc semicircular, provi<le<l with fivc tecth, onc of which is situatc on thc superior portion of thc apcrture, two on thc columella, an<l lwo 011 thc outer lip, \Vhich is slightly rcflected. Lcngth onc-tcnth of an inch; <lia- mctcr half its lcngth. Founcl on old walls, in Northumbcrland, near Ncwcastlc- upon-Tync, by Joshna Alcler, Esq. This spccics clilTcrs from V. p¿¡gma:ci in being slightly slriatcd, nml somcwhat more cylinclrical. &ctiun II.-Shcltf1tsifor11111ncl suúc¿¡linclrical; spfral con- vol-«tions sinistral; apcrt·urc c;~tc1·ncdl¿¡ nwrginccl. 7-, VmnIGo l'USll,LA, pi. XVIII, f. 4 1. Vei·tigo ¡msiUa, Miiller, Venn., II, p. 12-1, No. 320; Alcler, Mag. Zoo!. ami Bot., II, p.112; JelTreys, Linn. 'fr., XVI, Jl· :!61 ; Pfciffer, I, p. 72, pi. 3, f. ,15, ,lG; Thompson, Ann. and i\lag. Nat. Hist., VI, p. 4 1; Vcrtigo hctci·ostroplw, Leach, l\foll., p. 130; P·upa vc'l'tigo, Drnpernaud, p. GI, pl. 3, f. 3,1, :!5 ; Jamincct hctc1·ost1·oplu1, Hisso, IV, p. !)1 ; H cli:v vci·tigo, Gmcliu, Li1111. Syst. Nat., I, p. '.lG5-l, No. Hi5; Schrüter, Fluss- conchyl., S. 3'1!). Shell 1·entricosc, 01·ate, briltlc; rnlutions heterostrophe; body anti spire about equal in lcngth; the latter cousisling of four somcwhat ventricose, ncnrly transverso l'olutions, tcnninating in a ralher obtuse apex; apcrtn1·c subtriangular, obliquc, situate 0 11 thc right sidc of the shell; provided intcrnally with two tceth 011 thc superior portion of the pcristomc, two on the columellar lip, ami threc 0 11 thc outer lip ; peretreme narrow, whitc, a little rcllectecl, with a small umbilicus behiml thc colu- mcllar lip; outcr lip fumishecl with a longitudinal rib internally, an<l two or thrcc trausversc, pale lines, being the rclleclions of lccth within thc aperture, ami with a vcry slight wave; whole shcll subpellucid, of a pale chestnut horn-colour, ami with lon- g! tudinal, l'ery minute strim, which are only perceptible by the aid of a 1·ery strong- lens. Length a line; diameter not half its lcngth. This species has, in some fcw inslances, an cighth tooth situ- atcd on the pillar lip. Inhabits moist woody situations, . undcr slones. It is not a rarc, although a local specics in Dritain. l\Ir. Thompson, howe\'cr, says, it is 1·cry rare in Ireland, and has bcen mct with in the north-east and wcst of thc islancl. He par- ticulariscs Colin Glen, near Bclfast, Portmarnock, ancl Miltown Malbay. 8. VERTIGO ANCUST!On, pi. XIV, f. !).-First Ed., pi. 41, f. !). Vcrtigo lwtc,·ostropha, Lcach, Moll., p. 130; Vcrtigo a11g11s- tior, Jcffreys, Linn. Tr., XVI, p. 361; Alcler, l\fog. Zool. an<l Bot,, II, p. 112; Thompsou, Ann. ancl Mag. Nat. Hist., VI, p. 41 ; Tm·bo vci·tigo, Montagu, Test. Ilrit., p. 363, pl. l 2, f. 6; Turton, Brit. Fau., p. 186. Shcll ventricose in thc middle, an<l tapering to both extrc- mitics; with four heterostrophc Yolutions, ncarly flat 011 thc si<les, ami t erminating in an obtuse apex; body about a thir<l of the entirc length of thc shell; aperlure subtriangular, con- tracted an<l angular on its left superior sicle, rather rounclc<l bclow; pcrislome white, an<l somcwhat thickencd; outcr lip thickened, slightly wai•cd; three white teeth, two of which are on thc columella, ancl one on thc outer lip; whole shell covcre<l with fine, obliquely longitudinal stri..c, ancl of an opaque, palc umber-brown colour. Length about half a line. This is a ru1·e species, an<l is mcntioned by l\'Iontagu as obtainecl from the rcjcctamenta of the river Avon, Wiltshirc; J elfreys givcs its habi ta! in· the rejeclamenta of a small stream at Marino, near Swansea; ami Thompson oblaine<l il from Mr. \Y. H. Harvcy, who found it at Miltown l\falbay, lrelancl. In pointing out thc dilfercncc between this species an<l V. pusilla, Jelfrcys says, that !he back bcing more sunk in somc spccies than in others,-which charactcrises the growth of toothc<l lancl shclls,-is suffi cient proof that it is not the young of V. p11sillc1. GENUS 52.-AzECA,-Lcach. Shell subcylindrical, somewhat ohtusc; covercd with a pel- lucicl, glossy epidermis; aperturc pyriform, oblic¡ue, curvecl, an<l contractcd, and terminating in a point abovc; peritrcme thick, obtuse, united ali rouncl, ancl toothed intcrnally; columella im- perforated. 1. AzEcA TilIDENS, pi. XIV, f. 2.-First Ecl., pi. 41, f. 2. .ilzccct 11fatoni, Leach, Moll., p. 122, pi. tl, f. 8; Turton, Man., p. 68, f. 52 ; P'll]iCt Gooclalli, Férussac, Procl., p. i I ; Al<ler, Cat., p. 32; lb., Mag. Zool. ancl Bot., II, p. 110; A:cctt Britannica, Kenyon, l\fag. Nat. Hist., II, p. 42G, f. n; T111·úo triclcns, Montagn, Test. 13rit., p. 338, pi. 11, f. 2; l\:Iaton aml Ilackctt, Linn. Tr., VIII, p. 18 1; Turton's Linné, IV, p, 1!)!); Il,., 13rit. F au., p. 1s,1; 13rown, Ency. llrit., Gth Ed., VI, p. 456; Pupa ti-iclcns, Lamarck, An. San. Vert., VI, pi. 2nd, p. 108; Helü· triclens, Miillcr, Verm., II, p. 106, No. 305. Shell subcylinclrical, subpellucid, glabrous, glossy, ami of a horn-colour; body not quite so long as the spire, which consists of fil'e or six slightly inllated 1·olutions, tern1inatin!! in a somc- \l'hat obtuse apcx, with some minute longitudinal sl~·i,c ncar thc suture; aperture pyriform, oblique, a little cttl'l'cd; columclla slightly rellexed, with lwo long ami two shorl tccth alternating; outer lip with a single tooth on its margin. Length a qnartcr of an inch. Inhabits close, shacled, woody situations, among 111oss, umler stoncs, an<l among decayecl lea\'cs, &c.