ball; mollusca and brachiopoda. 421 



U. S. S. " Albatross," station 4642, Galapagos Islands, four miles S. 41° E. 

 from Ripple Point, Hood Island, in 300 fathoms, broken shell, bottom tempera- 

 ture 48°.6 F. U. S. N. Mus. 110,581. 



This very distinct little species has an unusually lively color for a shell from 

 such a depth. 



Ang^ulus Megerle. 

 Tellina (Angulus) carpenter! Dall. 



Tellina (Angulus) i^ariegata Carpenter, 1864, not Tellina (Angulus) variegata Gmelin, 



179L 

 Tellina (Angulus) carpenteri Dall, Proc. D. S. Nat. Mu8., 1900, 23, p. 303. 



U. S. S. "Albatross," station 3355, Gulf of Panama, in 182 fathoms, mud, 

 bottom temperature, 54°.l F. U. S. N. Mus. 122,934. 



It was most unexpected to find this species, common in sliallow water on the 

 coast of California, so far south, but it must be observed that the temperature of 

 the water at the depth stated above, in 182 fathoms, is almost exactly that of tiie 

 shallow waters of Alta California. Tiiough only a single valve was obtained, the 

 identity of the Panama specimen is not doubtful. 



ITIACOinA Leach. 



Macoma inornata Hanlet. 



Tellina inornata Hanley, P. Z. S. London, 1844, p. 144; Thes. Conch, 1847, 1, 

 Tellina, p. 315, pi. 59. fig. 123. (Not Tellina inornata Hupe in Gay, Hist, de 

 Chile, 1854, 8, p. 356, pi. 8, fig. 2 ) 



Tome, Chile, brought up by the anchor of the "Albatross," from about 14 

 fathoms ; young valves. U. S. N. Mus. 110,717. 



The shell figured by Hupe under the name of T. inornata is clearly distinct from 

 that originally so named by Hanley, being an entirely different and nmcli more 

 triangular shape. As the former does not appear to have been described, I pro- 

 pose for it the name of Macoma hupeana. It recalls M. inquinata Deshayes, but 

 is even shorter, higher, and more triangular. 



Psaniiiiacoina D.^ll. 



Macoma (Psammacoma) hesperus Dall, n. sp. 



Shell yellowish white with occasional brownish, narrow, concentric zones and a 

 pale yellowisli flush internally; valves inequilateral, the posterior end shorter, the 

 profile being an elongate oval; beak low, rather pointed, small; anterior dorsal 

 margin nearly straight, gently descending, the anterior end evenly rounded into 



