260 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 6 



Test of medium size, stout, compact, greatest diameter across the 

 last whorl of chambers; chambers distinct, large, inflated, rapidly at- 

 taining adult size; sutures distinct, depressed; wall smooth, dull; aper- 

 ture rather large, at the end of a very short neck, surrounded by a 

 thick phialine rim. 



Length 0.50-1.00 mm; diameter 0.35-0.50 mm. 



This species, described from the Miocene of California, occurs at 

 the following stations, usually rather rarely: 2, 39, 55, 1095, 1103, 1107, 

 1129, 1133. The specimens vaiy considerably in size and some are 

 much larger than the types of U. hootsi, but they maintain their stout, 

 inflated shape quite constantly. 



Distribution. — According to these records, the shallow water local- 

 ities suggest a redeposition. Other stations show a depth range from 183 

 to 340 fms. 



Uvigerina incills Todd, new species 

 Plate33, Fig, 4 



Test small for the genus, slender, fusiform, initial end sharply 

 pointed, the greatest diameter a little above the middle, periphery 

 markedly indented ; chambers numerous, gradually increasing in size until 

 the last one or two, then decreasing, the last-formed ones tending to 

 become biserial ; sutures very distinct, straight, deeply incised ; wall thin, 

 translucent, ornamented with numerous, sharp costae, not continuous 

 across the sutures, usually regular, but sometimes serrate and spinous; 

 aperture small, circular, at the end of a short neck, surrounded by a 

 flaring lip. 



Length 0.48-0.55 mm; diameter 0.20-0.25 mm. 



Holotype (AHF no. 57) from Station 217. 



This species differs from U. suhperegrina Cushman and Kleinpell in 

 its deeply incised sutures and its smaller, slenderer form. 



This species occurs rarely to frequently at the following stations : 200, 

 201, 215, 217, 336, 343, 422, 503, 505, 509, 539, 542, 543, 558, 574, 

 583, 2016, 2087, 2090, 2093, 2094, 2113, 2132, 2134, 2136, 2137, 2140, 

 2146, 2149, 2152, 2153, 2154, 2164, 2165. 



Distribution. — The type locality. Station 217, is Tenacatita Bay, 

 Mexico, in 50 fms. Other records are off Mexico, off Central America, 

 and off the coasts of Colombia and Ecuador in 6 to 138 fms. 



