Distinguished from the Cardita by having three teeth beneath the apices,
and a callous lengthened tooth or ridge.
Shell obliquely elongated, equivalve, inequilateral; valves striated,
but never ribbed; hinge with three teeth beneath the umbo, and one
lateral elongated tooth.
Cypricardia Guinaica.
C. angulata.
C. rostrata.
C. coralliophaga.
_C. Guinaica._ The Guinea Cypricardia. Pl. 10, fig. 6.
Species elongated, very inequilateral; summit rounded and recurved
anteriorly; two short divergent cardinal teeth, besides a lamellous
tooth; ligament very long, projecting or not; yellowish white, covered
with decussated striæ.