106 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 6 



able numbers at some of the stations: A-4, A-5, A-6, A-9, A-21, 235, 

 227, 256, 265, 267, 268, 269, 274, 275, 292, 473, 474, 426, 330, 573, 

 579, 577, 534, 537, 535, 2067, 2033, 2051, 2037, 2070, 2065, 2062, 

 207, 39, 283, 73, 500, 412, 226, 1046, 290, 535. 



Distribution. — From Cordova, Alaska, to Sechura, Peru. 



Trochammina vesicularis Goes 

 Plate 12, Fig. 1 



Trochammina vesicularis Goes, Kongl. Svensk. Vet. Akad. Handl., 

 vol. 25, no. 9, 1894, p. 31, pi. 6, figs. 235-237.— Kiaer, Rep't Nor- 

 wegian Fish, and Mar. Invest., vol. 1, no. 7, 1900, p. 44. — Heron- Allen 

 and Earland, Journ. Linn. Soc. Zool., vol. 35, 1924, p. 616. — Earland, 

 Discovery Rep'ts, vol. X, 1934, p. 103, pi. 3, figs. 44-46. 



Test small, high spired, the height typically greater than the breadth, 

 apex pointed, base rounded, composed of several whorls, with 4 or 5 

 chambers to the whorl, umbilicate; chambers distinct, inflated, of uni- 

 form shape, increasing rather rapidly in size as added, much rounded 

 at the base; sutures distinct, somewhat depressed; wall arenaceous, 

 with some larger fragments but smoothly finished ; aperture ventral, a 

 low opening at the base of the last-formed chamber. 



Diameter 0.25-0.30 mm; height 0.35-0.40 mm. 



Goes described this species from off Spitzbergen and Kiaer records 

 it from off Norway and the Arctic. The other records are from off Lord 

 Howe Island in the Pacific and from the Falklands sector of the Ant- 

 arctic. It occurs at numerous stations along the Pacific Coast in cold 

 water. The spire is much higher and the chambers more rotund than 

 in the following species. It occurs at the following stations: 258, 535, 

 471, 275, 462, 534, 2070, 2063, 1025, 2029, 2005, 2002, 2065, 2033, 

 2024, 207, 226, 298. 



Distribution, — ^An extensive range from San Miguel in 16 fms., to 

 Lobos de Afuera Island, Peru, in 22 fms., with numerous intermediate 

 stations off Mexico, in the Gulf of California, and off the Galapagos 

 Islands. 



Trochammina discorbis Earland 

 Plate 11, Fig. 10 

 Trochammina discorbis Earland, Discovery Rep'ts, vol. X, 1934, 

 p. 104, pi. 3, figs. 28-31. 



"Test free, minute, a trochoid spiral of 3-4 convolutions, with five 

 or sometimes only four chambers in the final convolution. Dorsal sur- 



