“CUSPIDARIA TENELLA.
(Pl. II., figs. 14, 14a.)
SHELL rather large, very thin, considerably convex, broadly rounded in front, narrowly or rather shortly rostrate posteriorly, whitish, covered with a thin periostracum, sculptured with distinct lines of growth and concentric waves; inner surface smooth, but concentrically sulcate, the shallow sulci corresponding with the external waves; dorsal margin of right valve delicate, with a small ligamental pit (see fig. 14a) directed obliquely backwards beneath the umbo, a raised ridge extends from this ligamental process, parallel with the edge of the valve, and might be regarded as a posterior lateral tooth; adductor scars and pallial sinus indistinct.
Length, 30 millim.; alt., 22; diam., 15.
Off Coulman Island, 100 fathoms.
This is a large species, but very thin, and somewhat resembles C. optima, Sowerby, from South Africa. It is, however, somewhat different in form, is much more delicate in substance, and the ligamental pit and hinder lateral tooth are different. Only a single right valve was obtained.”
(Smith, 1907: 1)
Cuspidaria tenella is een tweekleppigensoort uit de familie van de Cuspidariidae.[1] De wetenschappelijke naam van de soort is voor het eerst geldig gepubliceerd in 1907 door E. A. Smith.
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