A treatise on malacology; or, Shells and shell fish . b-ventri-cose, and rounded anteriorly, narrowed and com-pressed posteriorly ; cardinal teeth ^, some of whichare bifid; ligament oblong; external epidermis ex-tending over the margin ; fluviatile : apparently re-presenting Mactra in this genus, G. chinensis Gray. Sow. Man. f. 64. Solenymia Lam. Shape of Solenocurtis, but some-what cylindrical ; umbones very small, and placedlaterally ; hinge margin straight; valves gaping ontheir anterior end; cardinal teeth i, dilated andcompressed, with a callous ridge between ; ligament * I have not seen
A treatise on malacology; or, Shells and shell fish . b-ventri-cose, and rounded anteriorly, narrowed and com-pressed posteriorly ; cardinal teeth ^, some of whichare bifid; ligament oblong; external epidermis ex-tending over the margin ; fluviatile : apparently re-presenting Mactra in this genus, G. chinensis Gray. Sow. Man. f. 64. Solenymia Lam. Shape of Solenocurtis, but some-what cylindrical ; umbones very small, and placedlaterally ; hinge margin straight; valves gaping ontheir anterior end; cardinal teeth i, dilated andcompressed, with a callous ridge between ; ligament * I have not seen this shell, which, from the figure quoted, has exactlythe shape of Unio uvala. PART II. SOLENIN^. MY A. 367 internal and external: representing Pandora andGlycymeris. Epidermis thin, shining, Mediterranea. Sow. Gen. f. 112. (/^. 116. a.) My A Linn. Shell thick, ventricose, ovate, transverse,one end truncated and gaping ; umbones generallynearly central and prominent; cardinal tooth gene-rally large ,• spatulate valves often gaping. 117. Anatina Lam. Hyaline, thin ; cardinal tooth spoon-shaped, sometimes with a transverse internal append-age, or plate, like an additional tooth, (^fig. ) M. subrostrata. En. M^th. 228. f. 3. Mya Linn. Shell thick, strong ; cardinal tooth spatu-late ; both extremities gaping *; cardinal teeth ^.M. truncata. En. Meth. 229. f. 2. {fig. 117. h,c.) Panopia Lam. Resembling Mya; cardinal teeth -i,acute; ligamental margin greatly thickened ; liga-ment external. (/(/, ll6. c.) P. Aldrovandi. Sow. Man. f. 65. Corhula. Inequivalve, ovate; umbones central, onemore prominent than the other ; valves not gaping;cardinal teeth \, bearing the ligament: leading toMactra. (117. e,/.)Sulcata. En. Meth. 230. f. 1. C. nucleus. Sow. Man. 89. * Connected to Anatina by Anaiina rupicola Lam, 368 SHELLS AND SHELL-FISH. PART II* Pandora Lam. Inequivalve, thin, rostrated, perlaceousj one valve flat, the other convex ; ligament internal; umbones small; card
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Keywords: ., bookcentury1800, bookdecade1840, booksubjectmollusks, bookyear184
