NO. 1 CUSHMAN, MCCULLOCH : ARENACEOUS FORAMINIFERA 97 



Length up to 1.10 mm; breadth 0.25-0.28 mm. 



This is a more slender species than E. advena (Cushman) and the 

 texture of the wall is much finer as there is a larger amount of cement. 

 It occurs at the following stations: 508, 114, 285, A-19, 232, 283, 299, 

 275, 207, 238, 2070, 416, 2066, 2029, 413, 553, 227, 474, 226, 519, 

 2037, 2024, 2063, 285, 2065, 2061, 2033. 



Distribution. — From Cordova, Alaska, in 90 fms. to Octavia Bay, 

 Colombia, in 50 fms. 



Genus TEXTULARIELLA Cushman, 1927 



Textulariella pacifica Cushman 



Plate 9, Figs. 11, 12 



Textulariella pacifica Cushman, Special Publ. No. 8, Cushman Lab. 

 Foram. Res., 1937, p. 67, pi. 7, figs. 11-13. 



Test short and broad, circular in transverse section, tapering 

 throughout except in the last two pairs of chambers in the largest adults, 

 where the sides are nearly parallel, earliest whorl with four or five 

 chambers, later with a short triserial stage, and the adult biserial, aper- 

 tural end convex; chambers distinct, not inflated, in the adult of rather 

 uniform size and shape, not overlapping, the interior divided by numer- 

 ous radiating partitions near the periphery; wall coarsely arenaceous, 

 finely perforate, with an outer thin coating, smoothly finished, often 

 polished; aperture a low, arched opening, at the inner margin of the 

 last-formed chamber. 



Length 2.20 mm; diameter 1.35 mm. 



This species is close to T. barrettii (Jones and Parker) which 

 occurs in the tropical Atlantic but the Pacific form is smaller, and the 

 test is more coarsely arenaceous. The interior shows the early stages 

 more primitive, with the divisions of the chambers not developed as 

 early as in the Atlantic species. It has occurred at a number of our sta- 

 tions: 226, 228, 553, 554, 541, 275, 286, 73, 283, 285, 505, 227, 540, 

 207, 426, 223, 278, 2024, 2065, 2063, 2064, 2033, 2035, 2010, 2029, 

 2005, 584, 587, 332. 



Distribution. — Off Guadalupe Island in 65 fms., southward to 

 Gorgona Island, Colombia, in 20-60 fms. 



