DALL: MOLLUSCA AND BRACHIOPODA. 445 
U. S. S. “ Albatross,” station 2783, off the west coast of Patagonia, Southern 
Chile, in 199 fathoms, mud, bottom temperature 489 F. U.S. N. Mus. 87,547. 
Also at station 3360, Gulf of Panama, in 1672 fathoms, sand, temperature 429 F, 
Macandrevia diamantina Darr. 
Macandrevia diamantina Dall, Proc. U. S. Nat. Mus., 1895, 17, p. 723, pl. 30, fig. 5; 
pl. 32, figs. 3, 6. 
U. S. S. “ Albatross,” station 3362, Gulf of Panama, in 1175 fathoms, mud; 
bottom temperature 36°.8 F.; also at station 4656, in 2222 fathoms mud, off 
Sechura Point, Peru, temperature 359.9 F. U..S, N. Mus. 122,860, 
Macandrevia craniella Darr. 
Macandrevia craniella Dall, Proc. U. S. Nat. Mus., 1895, 17, p. 722, pl. 30, fig. 1. 
UNS, « Albatross,” station 3362, off Cocos Island, Gulf of Panama, in 1175 
fathoms, mud, bottom temperature 369.8 F. U. 5. N. Mus. 122,858. 
Only one specimen was obtained. It somewhat resembles Waldheimia wyvillii 
Davidson, but is larger, more solid, wants the medial septum in the dorsal valve, 
and differs in other minor details. 
