CLASS PELECYPODA 
39 
Type in U. S. N. M., No. 226333. Type locality, Station 3604, 
Bering Sea, in 1401 fathoms. 
Range. Bering Sea to Tillamook, Oregon. 
Tindaria ritteri Dali, 1916. 
Proc. U. S. N. M., 52:401. 
Shell small, plump, smooth except for incremental lines brilliantly 
polished, pale olive, darker near the margin, rounded in front, inequilat¬ 
eral, slightly recurved and bluntly pointed, and attenuated behind; beaks 
low, ligament very short and wholly posterior, 10 or 11 slender V-shaped 
teeth on either side. Length, 7; height, 4; diameter, 2.6 mm., the beaks, 
2.5 mm. behind the anterior end. (Dali.) 
Type in U. S. N. M., No. 209396. Type locality, Station 4325, off 
La Jolla, California, in 293 fathoms. 
Range. Known only from the type locality. 
Tindaria martiniana Dali, 1916. 
Proc. U. S. N. M., 52:401. 
Shell small, solid, olivaceous, inflated, subtriangular, inequilateral, 
the beaks nearer the anterior end; sculpture of fine concentric and still 
finer radial striae only visible under magnification; beaks full, incurved, 
3.5 mm. from the anterior end, a small lanceolate lunule and a narrower 
and longer escutcheon are indicated only by the brown color of their areas 
against the pale olive of the shell; shell rounded in front, pointed bluntly 
behind, the base arcuate, the dorsal slopes nearly straight; hinge with 14 
anterior and 16 posterior slender teeth, the ligament entirely external and 
posterior. Length, 8.6; height, 6.5; diameter, 5 mm. (Dali.) 
Type in U. S. N. M., No. 207318. Type locality, Station 4425, off 
Santa Barbara Islands, California, in 1100 fathoms. 
Range. Cape San Martin to the Santa Barbara Islands, in deep 
water. 
Tindaria dicofania Dali, 1916. 
Proc. U. S. N. M., 52:401. 
Shell small, olivaceous, callistiform, arcuate, with swollen beaks, con¬ 
centrically uniformly sculptured, nearly equilateral, the anterior end 
shorter; a small lanceolate lunule and escutcheon present; both rounded, 
base conspicuously arcuate, the posterior end slightly attenuated; about 
11 teeth on each side of the hinge, the ligament wholly external. Length, 
4.5 ; height, 3.2; diameter, 2 mm. (Dali.) 
Type in U. S. N. M., No. 215595. Type locality, Station 2923, off 
San Diego, California, in 822 fathoms. 
Range. Known only from the type locality. 
