dall: mollusca and brachiopoda. 445 



U. S. S. "Albatross," station 2783, off the west coast of Patagonia, Soutliera 

 Chile, in 122 fathoms, mud, bottom temperature 48° F. U. S. N. Mus. 87,547- 

 Also at station 3360, Gulf of Panama, in 1672 fathoms, sand, temperature 42" F. 



Macandrevia diamantina Dall. 



Macandrevia diamantina Dall, Proc. U. S. Nat. Mus., 1895,17, p. 723, pi. 30, fig. 5; 

 pi. 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 35°.2 F. U. S. N. Mus. 122,860. 



Macandrevia craniella Dall. 



Macandrevia craniella Dall, Proc. U. S. Nat. Mus., 1895, 17, p. 722, pi. 30, fig. 1. 



U. S. S. "Albatross," station 3362, off Cocos Island, Gulf of Panama, in 1175 

 fathoms, mud, bottom temperature 36°.S F. U. S. N. Mus. 122,558. 



Only one specimen was obtained. It somewhat resembles Waldheimia tct/villii 

 Davidson, but is larger, more solid, wants the medial septum iu the dorsal valve, 

 and differs in other minor details. 



