NO. 5 CUSHMAN AND MCCULLOCH: SOME BULIMINIDAE 257 



Stations: 207, 221, 222, 223, 226, 228, 229, 238, 242, 249, 253, 

 254, 258, 263, 265, 266, 268, 286, 296, 298, 299, 422, 542, 1076, 2011, 

 2012, 2013, 2015, 2023, 2033, 2034, 2052, 2063, 2065, 2066, 2070, 

 2090, 2104, 2105, 2106, 2107, 2108. 



Type locality. — Outer Gorda Bank, Lower California, Lat. 23° 01' 

 N.; Long. 109° 28' W., in 50 fathoms. 



Distribution. — With the exception of Station 542 which is off the 

 coast of Ecuador in 65-80 fathoms, all other records of the above list 

 indicate a wide distribution within the Gulf of California and off the 

 coast of Mexico. The depth range is from 8 to 250 fathoms off Guada- 

 lupe Island. 



Subfamily UvigeHntnae^ 



The foraminifera included in this subfamily belong in the genera 

 Uvigerina, Hopkinsina, Angulogerina, and Trifarina. The large series of 

 specimens available for study has made more apparent than ever the close 

 relationships between certain species and varieties, and the actual grada- 

 tion of one species into another. Consequently, it must be recognized that 

 the concepts of the species here presented may be a matter of convenience. 

 More study of many more specimens may be expected to result in further 

 clarification of this problem. The study of these large series of specimens 

 also shows the wide range of ornamentation present, the variations in type 

 of ornamentation and in degree, and the rudimentary ornamentation some- 

 times present on a normally unornamented form. In some cases several 

 specimens are figured illustrating these variations. In most species and 

 varieties both microspheric and megalospheric forms have been recognized 

 and in some cases figured to illustrate the great differences between them. 

 A few species show gerontic characteristics, becoming smaller and more 

 attenuated as growth proceeds. 



Genus UVIGERINA d'Orbigny, 1826 



Uvigerina cushmani Todd, new species^ 



Plate 3 3, Fig. 1 



Uvigerina cushmani Todd, Ms, in Cushman and Todd, Contr. Cush- 

 man Lab. Foram. Res., vol. 23, 1947, p. 66, pi. 16, figs. 4, 5. 



Test of medium size for the genus, elongate, of nearly equal diameter 



1 The senior author of this report turned over all of the mounted material of the 

 genera Uiigerina, Hopkinsina, Trifarina and of Angulogerina to Miss Ruth Todd, 

 Research Associate, Cushman Laboratory for Foraminiferal Research. Miss Todd 

 "has been responsible for the synonymy, description of new species, and the dis- 

 cussion in connection with the species of these genera. 



