CLASS PELECYPODA 
107 
Astarte fabula Reeve, 1855. 
Plate 19, figs. 4, 4a. 
Last of the Arctic Voy ., 2:398; pi. 33, fig. 5. 
Testa transverse ovata, compressa, versus umbones sub-trigona, latera- 
bus utrinque sub-concavis, deinde rotundatis, circa umbones regulariter 
sulcata, deinde laevigata aut striis incrementi notata, areis lateralibus parum 
excavatis; fulvescente-castanea. (Reeve.) 
A thin elongate-ovate, inflated species, with the posterior end slightly 
longer, the umbonal region peculiarly, squarely, concentrically sulcate, and 
the basal portion striated. The color is usually dark brown. It was 
described by Sowerby in 1874, as A . seniilirata. (Dali.) 
Type in British Museum? Type locality, Arctic. 
Range. Arctic Sea, Bering Sea, Nunivak Island. Circumboreal. 
Astarte bennettii Dali, 1903. 
Proc. U. S. N. M. f 26:946; pi. 63, fig. 6. 
Shell small, thin, sub-cuneate, sub-compressed, with a polished oliva¬ 
ceous periostracum; posterior end shorter, bluntly rounded; anterior end 
longer, more sloping and direct dorsally, rounded; base nearly straight in 
the young; surface finely concentrically striate, or nearly smooth, the 
striae more apparent on the beaks; lunule narrow, lanceolate, impressed, 
escutcheon similar, a little longer than the lunule; beaks high, slightly 
prosogyrate; hinge delicate, the large cardinals slightly grooved above, 
the laterals apparent; pallial line rather near the margin, which is not 
crenulate. Length, 11.5; height, 10.5; diameter, 5 mm. (Dali.) 
Type in U. S. N. M., No. 83221. Type locality, northern part of 
Bering Sea. 
Range. Polar Sea at Bennett Island, and south in Bering Sea to 
Nunivak Island. 
Astarte vernicosa Dali, 1903. 
Proc. U. S. N. M., 26 :948; pi. 63, fig. 1. 
Shell small, sub-compressed, sub-trigonal, sub-equilateral, covered with 
a brilliantly polished olivaceous brown periostracum; beaks rather high, 
slightly prosogyrate, the lunule narrow, lanceolate, impressed, the escutch¬ 
eon similar but longer; base arcuate, anterior end rounded, posterior 
end slightly more produced; hinge delicate, inner margins smooth, hinge 
teeth much as in A. bennettii . Length, 17; height, 15; diameter, 6.7 mm. 
(Dali.) 
Type in U. S. N. M., No. 109276. Type locality, off Icy Cape, Arctic. 
Range. Arctic and Bering Seas to the Attu-Atka Islands in the 
Aleutian Chain. 
