140 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL.6 



the inner margin, the slit being nearly parallel to the flattened sides of the 

 form instead of at right angles to them as in typical species of Textiilaria. 



This is a very common species in the Pacific Ocean as well as the At- 

 lantic Ocean and the Caribbean Sea. It has been noted at the following 

 Hancock Expedition stations: 103, 209, 252, 253, 260, 265, 266, 267, 

 268, 271, 275, 285, 286, 290, 292, 296, 333, 401, 403, 409, 410, 411, 

 413, 416, 418, 421, 423, 447, 454, 456, 459, 460, 461, 462, 463, 464, 

 465, 466, 467, 468, 469, 470, 471, 473, 478, 481, 482, 539, 540, 573, 

 2008, 2010, 2012, 2018, 2020, 2023, 2024, 2029, 2031, 2033, 2034, 

 2035, 2037, 2051, 2063, 2065, 2066. 



Distribution. — The numerous stations recorded above give a range 

 from California southward into the Gulf of California, off Central 

 America and Peru, with the greatest abundance in the region of the Gala- 

 pagos Islands. 



Textularia schencki Cushman and Valentine 

 Plate 16, Figs. 23a, h, c 



Textularia cf. abbreviata Cushman, Bull. Scripps Inst. Oceanog- 

 raphy, Tech. Sen, vol. 1, 1927, p. 136. 



Textularia schencki Cushman and Valentine, Contr. Dept. Geol. 

 Stanford Univ., vol. 1, no. 1, 1930, p. 8, pi. 1, figs. 3a, b. 



Test short and broad, compressed, especially in the early portion, in- 

 creasing rapidly in width from the pointed initial end, giving the test a 

 broadly triangular form in front view, periphery subacute, except in the 

 last pair of chambers in the adult, which have a rounded periphery, aper- 

 tural end flat ; chambers few, somewhat flattened except the last pairs in 

 the adult, which are inflated; sutures distinct, only slightly depressed, 

 straight; wall distinctly arenaceous, composed of fine and coarse arena- 

 ceous grains cemented with calcareous cement, smoothly finished; aper- 

 ture a narrow slit at the inner margin of the last chamber. Length, up to 

 1.00 mm. 



This species has been noted at the following Hancock Expedition sta- 

 tions: 50, 101, 201, 292, 306, 314, 328, 409, 410, and 459. 



Distribution. — This investigation extends the range from the type 

 locality off La Jolla, California, southward into the Gulf of California, 

 off Central America, and off the Galapagos Islands. 



