History of British animals - University of Guam Marine Laboratory

264 MOLLUSCA. PULMONIFERA. Helix.76. H. arbustorum.— Shell mottled with a single brownlongitudinal band.Cochlea maculata, List. An. Ang. 119. Conch, t. lvi. f. 53.— H. arb.Mull. Verm. ii. 55. Penn, Brit. Zool. iv. 136. Mont. Test. Brit. 413.— In boggy places, common.Breadth scarcely an inch ; whorls slightlystriated longitudinally, andwrinkled transversely ; mouth obliquely transverse, rounded ; margin white,thick, reflected.77. H. nemoralis.— Peristome brown ;margin next the pillarnearly straight.Cochlea citrina, List. An. Ang. 116. Conch, t. lvii. f. 54.—H. nem. Mull.Verm. ii. 46. Penn. Brit. Zool. iv. 137. Mont. Test. Brit. 411Shady places, common.Breadth about an inch ;whorls five, wrinkled across. Colour yellowish,without bands, with a single band, or with several bands. These varietiesare considered by the Reverend Revitt Sheppard as distinct species, becausethey do not unite indiscriminately in the season of love ;and he " adds, fromthe one-banded and many-banded sorts I have taken the spicula or love-darts ;that of the former is four-sided in the middle, and perfectly straight ; in thelatter it is also four-sided in the middle, but curved as in H. aspcrsa."78. H. hortensis.— Margin of the mouth invariably white ;even near the pillar.Cochlea citrina, No. 1. List An. Ang. 117.—H. hort. Mull. Verm. 52.Mont. Test. Brit. 412 Not common.This species closely resembles the preceding, of which it is considered bymany as only a variety. It is smaller in size, and less common.— 79. H.jitsca. Shell thin, pellucid, horn-coloured, with fiveor six whorls.Mont. Test. Brit 424. t. xiii. f. 1—In England and Ireland, not uncommon.Breadth less than half an inch ; smooth ; mouth lunated, narrow near thepillar, thin, not reflected ; whorls rounded, the last large. This seems to bethe H. fulva of Muller, No. 249—A variety of a white colour, glossy, andpellucid, was sent to Montagu from Scotland by Mr Boyes.EXTINCT SPECIES.1. H. carinata.— Spire short, conoidal, of three or four turns; a raised,flat, ribband-like projection passes from the lateral edge of the mouth alongthe middle of the last turn, till it meets the inner edge of the mouth, whenceit continues between the volutions to the end. Umbilicus open.— Sower.Min. Conch, t. x. upper and lower figures In Carboniferous Limestone, Settle,Yorkshire.2. H. Gentii.— Discoid, gibbose, smooth, with a spiral band along the upperpart of the whorl; aperture large, expanded, elliptical. — Sower. Min. Conch.t. cxlv.— Green Sand near Devizes.3. H. globosa.— Globose, slightly elongated, obscurely transversely striated;whorls but gradually increasing in size ; outer-lip reflected. — Sower. Min.Conch, t. clxx. Crag Fresh water Limestone, Isle of Wight.