A treatise on malacology; or, Shells and shell fish . ULA. BULIMUS. 181 with the Turbidw. Certain it is, that these animals (madeknown by the excellent figures of the French voyagers)are very diiFerent from the Auricula undulata; they haveonly two short and depressed tentacula with basal eyes,as in Pedipes*, instead of the usual structure of theseorgans common alike to Auricula undulata and Bulimtishcemastomus. On these reasons do we restrict the sub-genus Auricula to the characters abovestated — at least, until further inform-ation leads to a different conclusion. OfaU the species of Auricula
A treatise on malacology; or, Shells and shell fish . ULA. BULIMUS. 181 with the Turbidw. Certain it is, that these animals (madeknown by the excellent figures of the French voyagers)are very diiFerent from the Auricula undulata; they haveonly two short and depressed tentacula with basal eyes,as in Pedipes*, instead of the usual structure of theseorgans common alike to Auricula undulata and Bulimtishcemastomus. On these reasons do we restrict the sub-genus Auricula to the characters abovestated — at least, until further inform-ation leads to a different conclusion. OfaU the species of Auricula here named,the Auris-Leporis (fig. 27.) is the mostremarkable; the plait on the pillar is notreal, inasmuch as it is not solid, butformed by a sharp angle of the body-whorl round the umbilicus; the apertureis large, and so oblique as to appear dis-torted. It is by this shell that we pass to the sub-genus Goniostoma already mentioned (fig. 25.). Thefive sub-genera of Bulimus will thus form a circle, andpresent us with the following analogies : —. Analogies of the Sub-Genera o/Bultmus. Genera Sub-generaof the of Turbidte. Bulimus. AnalogicalCharacters. Genera of AchatincE, Turbo. Bulimus Body-whorl large, itricose; spire J-BuuMUS. f Body-•< ventL shor TuRRiTELLA. Bulimulus ScALARiA. Leptospi hort. 5Body, whorl more Jslender; outer lip f a p„,T,,„.thin, or veryf^^^^^^-slightlyreflected. Jf Spire excessively Tira. < long: body-whorl J-Clausilia. Sub-genera ofAchatiniS. Achatiniz. CochUcopa. Macrospira. ScissuRELLA. Goiiyostoma Melampus. Auricula. Helicina. Leucostoma ? small. J A slight notch or channel at the( base of the aper- 4 ture. 3 rOuter lip dilated; 4 the margin J-Cyclostoma. Achalinella. L spreading. s inM * See an admirable memoir upon this genus by Mr. Lowe, in the Zoologi-cal Journal, No. xix, p. 28U. N 3 182 SHELLS AND SHELL-FISH. PART I If, therefore, the Auricula Midce* and JudcB belongto the division of which Melampus is the type, they canbe so arr
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Keywords: ., bookcentury1800, bookdecade1840, booksubjectmollusks, bookyear184
