. Transactions - American Philosophical Society. et of Mr. .8, Length , Breadth inches. Shell triangular, solid, inflated; substance of the shell very thick, thinnerbehind ; beaks elevated, large and solid; ligament short and rather thick; epi-dermis dark brown with several large interrupted rays over the umbones; car-dinal teeth rather large; lateral teeth oblique, short, thick and nearly straight;anterior cicatrices distinct; posterior cicatrices distinct, the smaller one beingplaced on the end of the lateral tooth; dorsal cicatrices scarcely perceptible,placed on the infe
. Transactions - American Philosophical Society. et of Mr. .8, Length , Breadth inches. Shell triangular, solid, inflated; substance of the shell very thick, thinnerbehind ; beaks elevated, large and solid; ligament short and rather thick; epi-dermis dark brown with several large interrupted rays over the umbones; car-dinal teeth rather large; lateral teeth oblique, short, thick and nearly straight;anterior cicatrices distinct; posterior cicatrices distinct, the smaller one beingplaced on the end of the lateral tooth; dorsal cicatrices scarcely perceptible,placed on the inferior part of the cardinal tooth; cavity of the shell very shallow;cavity of the beaks shallow and rounded; nacre white and iridescent. Remarks.—A single specimen only of this shell was received with thosesent by Mr. Edgar. It is a well characterized little species. In outline it issomewhat like U. trigonus, (nobis,) but is more rounded, has not so sharp acarina and may be distinguished by its broad rays. .* //t€l^Z*/. ^^ ^^ ^^^Sc^^^^^^j^ as.
Size: 1601px × 1560px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury, bookidtransactionsame08ameruoft, booksubjectscience
