Manual of conchology, structural and systematic Volume 4; with illustrations of the species. Pulmonata - Tapa blanda

Sinopsis

This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1887 Excerpt: ...lamina within, and a heavy appressed callus at the insertion. Diam. 25-28, alt. 11-13 mill. Ins. Grand Canary. The cuticle is very thin, corneous, usually yellowish, sometimes very bright, and exfoliates with great facility. The shell has some resemblance to //. consobrina. H. jaNTHiNa Mabille, 1883. PI. 48, figs. 1, 2. Imperforate, depressed-globose, solid, somewhat thickened, a little shining, reddish, under a very evanescent, thin, yellowish cuticle, paler beneath, ornamented with five brown bands, (the second and third ordinarily coalescent), more or less interrupted with yellow spots, costulate-striate, all over mal lea te and under the lens minutely granulate; spire conic, apex obtuse, rugose-punetulate, bright, purplish; whorls 5, convex, regularly, very rapidly increasing, separated by subimpressed sutures; body-whorl large, rotundtumid, obscurely subconstricted at aperture, slightly gibbous, regularly descending; aperture oblique, lunate, wide oblong-ovate, fauces bluish-white, margins subdistant; peristome thickened, reflexed, rose-tinted, outer margin sinuately incurved, basal substraightened, with a broad appressed callus at the insertion. and a strong, elevated, dentiform lamina, columella short, obliquely tortuous. Diam. 24-26, alt. 11-12 mill. Ins. Grand Canary. Allied to the preceding species. H. Gravida Mousson, 1872. Imperforate, solid, conic-globose-depressed, striate, rudely malleate, destitute of cuticle and color; spire widely conoid, apex small, smooth; suture closely subimpressed; whorls 5, first sensibly increasing, flattened, the last somewhat descending, subinflated around the suture, rounded, declivous above, subturgid below; aperture very oblique, transverse lunate-oval; peristome obtuse, very thick, convexreflexed, sublabiate w...

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