FAMILY VIII.
Nymphacea. Ten Genera.

This family is divided into N. Solenaria and N. Tellinaria, from their resemblance to the Solen and Tellina.

N. Solenaria. Three genera.

1. Genus Sanguinolaria. Pl. [VII].

Animal. Unknown.

Shell. Oval, compressed, a little elongated, gaping but little, equivalve, subequilateral, rounded at both extremities; no mark of posterior keel; summits feebly marked; hinge formed by one or two contiguous cardinal teeth upon each valve; ligament projecting, two round muscular impressions, distant and joined by a narrow palleal impression strongly sinuous behind. Inhabits the sea at Jamaica and shores of America. Nine species.

2. Genus Psammobia. Pl. [VII].

Animal. Unknown.

Resembling the Tellina, from which it was taken, but not having an irregular plait on the anterior part.