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

100 MOLLUSCA. [CoNCHACEA, small primary tooth in each valve, and also two lateral teeth in both valves; sinus slightly heart-shaped at its superior extre- mity ¡ colour pale ycllowish-whitc. At first I was disposed to considcr this the young of A. crassa, but its want of a sinus, more regularly ovate form, thc shapc of the pallial sinus, and large bifid tooth, induced me to givc it a ncw spccific namc. This shcll was found at Newbigging, Northumberlancl, by Waltcr Calvcrly Trevelyan, Esq., and is in the splendid cabinet at Wallington, Northumberlancl. GBNUS 24.- TELL!NA,-Linn:cus. Shell compressed, transverse, subcqui1·alvc, inequilateral¡ pos- terior side usually roundcd; thc anterior somcwhat producccl, or beaked and angular; anterior ventral margin with an irregular flexuosity; gencrally with two cardinal teeth in cach valve, but only one in somc instances; usually lwo lateral tecth in both valvcs, but sometirnes only one, ami for the most part remole from the prirnaries; two distant muscular impressions; pallial impression with a very large sinns; ligament externa!. l. TEI.LINA DEPIIESSA, pi. XL, f. 12. 1'cltim, dcp1·cssa, First Ed., pi. 16, f. 12; Maton ami Hackett, p. 51 ; Ilrown, \Vcrnerian Mcm., II, p. 507; Donovan, V, pl. 163; Turton, l3iv., p. 10,1, pi. 8, f. 6; Tellina squalida, Mon- tngu, p. 5G; Fleming, p. 1 136; B oscmpm sq11c1lida, Leach, MSS., p. 7. Shell flat, thin, lransversely oblong-ovate; with a sinus in one valve, ru1111i11g from thc nmboncs, ami terminating 011 the basal margin, 011 the cartilarge or beakecl side, in the left valve, with a corresponcling elevation or riclgc in the opposite vah·e; car- tilage sido tcrmi11ati11g below in an acule angle or beak; thc othcr sido beautifully roumlecl; mnboncs very small, nearly central, ami ,·ery slightly turnecl to one sicle; colour pale or rich orange-yellow, sometimes nearly white, ami when perfcctly rccent, are covercd with a fine, thin, brownish epidermis; whole surface finely, but not rcgularly, striated conccntrically; hingc with two primary tccth in onc valvc, ancl thrce in thc other, une of which is somcwhat remole, laminatecl at thc base, ancl acule at thc point; insiclc yellowish-white or orangc-ycllow; margins plain, and sharp. This very hamlsomc spccies is founcl at Poole ami \Vcy- month, Dorsctshire; Dublin Ilny ami Portmarnock, lrclancl. 2. TELl,!NA l'UNICEA, pi. XL, f. 13. Tellilw punicca, First Ecl., pi. 16, f. 13; l\faton ancl Hackett, P· 50; Turton, Jfü·., p. 100; Flcming, p. 435; Tellina lacta, l\fontagu, p. 57; 1'cllim, incequsfriata, Dono\'an, IV, pi. 123; Tellinafmgilis, Pennant, IV, p. 86, pi. 47, f. 26. Shcll moclerately slrong, trans1•erscly oblong-ovatc, much compresscd, inequilnternl; umbones 1·ery small, harclly clcvatcd abo,·c the hingc lino; one siclo s11bacute near thc base, and thc other well roundccl; surfacc glossy, pale ycllow or skin-colour; with numcrous, strong, regular, rather open, concentric stri:c; hingc with threc lceth, the outer one on thc anterior sicle bificl, thc olhcr exterior onc broacl, more remole, ami placed somc- what transYcrscly obliquc, holding an intermecliatc d1aracter bctween a primary ami lateral tooth ; bot h ,·alves with a very remole lateral tooth; margins plain, ami sharp; insicle pale pink or bluish-whitc. Found on the Dorselshire coast, Portlaml, and at Guernsey; and my late friend Sir Patrick Walker found it on the shore at Leith. We mct with dcnd shells with the valves unitecl, by clrcdging, off Holy Island. Thcsc are in the cabinet of Lady Jardinc. It may, howevcr, be considerecl as a very raro Ilritish shell. 3. TELLINA STRIATA, pi. XL, f. 15. Tellina sl?'iata, First Ecl., pi. 16, f. 15; Montagu, p. 60, pi. 27, f. 2; Maton and Rackett, p. 53; Turton, Iliv., p. 106; Fleming, p. 436. Shcll subtriangularly subovate, thin, subpellucicl; glossy, of a rosy or white-colour, clarker towards the umboncs, which are a littlc procluced, placed nearly central, ancl slightly inllectecl; surface with numerous, ,·ery fine, concentric stri:c ; and by the aid of a strong lens, ncarly obsolete, exceeclingly minute, longi- tudinal streaks or stri::c are observable ; one side narrow, some- what beakecl, and obliquely subtruncated; the other beautifully rounclccl; cartilage slope with a slight indentation; insidc rosy, particularly towards the umbonal region, and bccoming paler towarcls the margins; hinge with two remole, strong, lnminated teeth. Found on the beach at P ortlancl ancl \Vcymouth. Extremely rare. 4. TELLINA LINEATA, pi. XL, f. 17. Tellina lineata, First Ecl., pi. 16, f. 17; Turtou, Conch. Dict., p. 168, pi. 4, f. 16; lb., Biv., p. 99, pi. 7, f. 1; Flcming, p. 435. Shell semitrausparent, lransversely oblong-ovate, slightly pro- cluced at one sidc, ancl rounclecl at the other; umbones small, nol quite central, ancl very slightly, if at ali, reflccted; surface pale cream-white, with a pale red longitudinal stripe running close to the side in each valve; with numerous, fine, very close, regular, concenlric striro, which are strongest towarcls the sicles; hinge with two cardinal teeth, one of them enti re ami the other clcft, ami a lateral, laminar one on each side, in onc valre, ami a single, bifid, primary looth in t hc other. Dredgecl by Dr. Turlon in Teignmouth Ilay. 5. TELLINA TENUIS, pi. XL, f. 19. Tellilw tenuis, First Ecl., pi. 16, f. 19; Montagu, p. 59; Donovan, I, pi. 19, thrce lowcr figures; Turton, Iliv., p. 107 ; Fleming, p. ,136; Forbes, p. 46; Maton ancl Hackett, p. 52; Leach, MSS., p. 7; Tellina ccwmwia, Pennant, IV, p. 89, pi. ,19, f. 32, right hand figure. Shell transvcrsely ovale, thin, much compressed, cxtrcmely fragile, subpcllncid, ami extremely glossy; umboncs small, ncarly central, their inflection to one siclc bcing harclly per- ceptible; the cartilage sicle somewhat producecl, the other fincly rounclcd; whole surfacc covcrcd with cxtremcly fine, somewhat irregular, conccntric siria! ; colour rnrying from pale skin-colour, white, citron-yellow, to carnations in almost ali shacles ; sometimes plain, but for the most part with con- centric zones, of lighter or darker shaclcs of the prerniling colour of the shell; hinge with two primary teelh in cach vall'c, one of them with a slight lateral t ooth; insiclc glossy, ami generally of the smue hue as thc externa! surface, bnt paler. This Yery bcantiful shell is common 011 ali thc sancly shorcs of Ilritain ami Irelancl.