NO. 4 CUSHMAN AND MCCULLOCH : SOME VIRGULININAE 215 



specimens has the ornamentation largely confined to the sides of the test, 

 is usually more highly ornamented on the later chambers with very deli- 

 cate threadlike costae. It occurs at many stations and is often found in 

 considerable numbers. 



Stations: 39, 55, 80, 136, 226, 227, 241, 256, 258, 259, 260, 264, 299, 

 329, 343, 409, 410, 412, 413, 414, 417, 461, 466, 468, 472, 473, 474, 

 478, 504, 512, 514, 573, 1008, 1011, 1068, 1072, 1075, 1076, 1100, 2087, 

 2097, 2098, 2100, 2113, 2116, 2133, 2134, 2136, 2137, 2140, 2149, 2152, 

 2153, 2154, 2156. 



Type locality. — Off Tagus Cove, Albemarle Island, Galapagos, in 

 80 fms. 



Distribution. — These stations record this species at numerous places 

 in the Gulf of California in 8 to 200 fms.; off Catalina in 180 fms. and 

 southward off Central America in 5 to 46 fms.; off the Galapagos Islands 

 in 9 to 175 fms. 



Bolivina torqueata Cushman and McCulloch, new species 



Plate 27, Figs. 5, 6 



Test small, twisted, often strongly so, early portion compressed, later 

 irregularly rhomboid in section, sides slightly concave, periphery in the 

 adult broad and truncate ; chambers distinct, numerous, increasing rather 

 regularly in size as added, little if at all inflated; sutures distinct, oblique, 

 somewhat limbate, little if at all depressed ; wall coarsely perforate ; aper- 

 ture an oblong opening in the median line of the apertural face of the last- 

 formed chamber with a distinctly thickened rim. 



Length 0.40-0.50 mm.; breadth 0.20-0.25 mm.; thickness 0.12-0.16 

 mm. 



Holotype (AHF no. 46) from Station 470. 



This species differs from Bolivina rhomboidalis Millett in the very 

 much twisted test, the early compressed portion, and the strongly limbate 

 sutures. 



The species occurs in considerable numbers at numerous stations and 

 shows much variation in the amount of twisting of the test. The coarse 

 perforations give a very rough appearance to the surface of the test. 



Stations: 208, 222, 227, 228, 418, 457, 466, 469, 470, 472, 473, 503, 

 1003, 1008, 1013, 1017, 1052, 2153. 



Type locality. — Off Charles Island, ^2 ^^^ north of Black Beach, in 

 9 fms. 



