It 
Fam. Cardiide. 
Carpium GILCHRISTI, n. sp. (Plate VII., fig. 1). Shell broadly 
sub-ovate, thin, inflated, white ; surface elaborately sculptured; 
anterior side (rather less than half), very closely latticed with 
radiating and transversely undulated ridges, the interstices 
having the appearance of numerous minute pits ; this portion 
of the surface is separated from the rest by a vertical line 
reaching from the umbones to the ventral margin. The 
remaining part has about 18 narrow prickly ribs, with two 
or three closely punctured grooves between each. Dorsal 
margin short, convexly sloping on each side ; posterior lateral 
margin rather straightly convex, anterior and ventral rounded. 
Umbones broad, rounded; cardinal area small ; ligament 
narrow and thin; lunule very small. Interior white, smooth, 
with serrated margin ; abductor scars of moderate size situated 
rather high up, and very near the lateral margins ; pallial 
line simple. Hinge rather narrow, with two unequal cardina! 
teeth in each valve, and rather prominent lateral teeth. 
Measurement :—Posterior to anterior, 12; umbones to 
ventral margin, 13; thickness (valves united), 11 millim. 
Hab. :—Algoa Bay, 15 fathoms. 
A beautifully and curiously sculptured little shell, in two 
distinct patterns, each finishing abruptly in a subcentra! 
vertical line. The sculpture of the posterior portion somewhat 
resembles that of C. exasperatum, Sowerby. 
Fam. Veneride. 
VENUS (ANAITIS) INTERSCULPTA, N. SP. (Plate Vily ter2)¢ 
Shell transversely oval, rather compressed, yellowish white 
tinged with pink; concentric lamelle high, reflexed, thin,. 
corrugated ; interstices decussated by numerous close radiating 
riblets which are here and there bifurcated, and fine concentric 
strie. Posterior dorsal margin long, slightly arched ; anterior 
short, concave; ventral margin roundly arcuate, obtusely 
angled at the end. Posterior cardinal area narrow, slightly 
impressed, roughly striated ; lunule rather small and narrow, 
brown. Umbones acute, anteriorly inclined. 
Measurement :—Anterior to posterior, I4% ; umbones to. 
ventral margin, IT ; thickness, 64 millim. | 
Hab.:—Between Bird Island (Algoa Bay) and the mainland, 
10-16 fathoms. 
The shell somewhat resembles V. tiara, Diller., but besides. 
being of a more oblong form, it is distinguished by the peculiarly 
plicate character of the lamelle and interstices. 
