410 MOLLUSCA. 
Length half an inch; height two-fifths of an inch; breadth three- 
twentieths of an inch. 
Inhabits the Feejee Islands. Mr. Hawkins. 
Very much like 7. casta, Hanley, which is described as pellucid, 
and no mention is made of the yellow colour of the interior, or of the 
two white umbonal radiations. One specimen is tinted and zoned 
with rose-red, and the interior is wholly red, preserving, however, the 
umbonal white rays. The distant concentric ridges, like a rubbed 
Lucina Jamaicensis, are worthy of notice. 
Figure 516, exterior of a red and white specimen; 516 a, inside of a 
white specimen; 5164, dorsal view; 516, hinge. 
Donax PALLipus (Gould). 
Testa transversa, ovato-triangularis, solidula, convexa, exalbida, posticé 
concentricée sulculata, anticée polita; apicibus post-medianis ; mar- 
gine dorsali utrinque declivi (precipue retrorsum) arcuato; latere 
antico semi-ovali, sensim angustato, ad apicem rotundato ; latere pos- 
tico subtriangulart, rotundato ; margine ventral valde arcuato, posticé 
sinuato: interior eburnea, incrassata; dentibus modicis. 
Donaz pallidus, Gou.p; Proceed. Boston Soc. Nat. Hist., i. 254, 
June 1850. Expedition Shells, 81. 
SHELL transverse, ovate-triangular, inequilateral, rather solid, disk 
tumid, dead yellowish-white, anterior portion smooth, and with very 
delicate, radiating strie; posterior portion with delicate concentric fur- 
rows; beaks two-fifths the distance from posterior end, which is short, 
triangular, with the margins swelling, and the angle rounded ; anterior 
end semi-elliptic, the dorsal margin gently sloping and swelling, the 
tip rounded: within, ivory-white, tinged with a little flesh-colour, 
thickened ; cicatrices deeply marked ; hinge rather delicate, especially 
the lateral teeth ; the lower margin is regularly arcuate, except poste- 
riorly, where it is a little sinuate. 
