FORAMINIFERA OF THE PHILIPPINE AND ADJACENT SEAS. 225 



Cristellaria orbicularis— Material examined. 



CRISTELLARIA ORBICULARIS (d'Orbigny), var. SUBCARINATA Cushman. 



Plate 44, fig. 1. 



Cristellaria orbicularis (d'Orbigny), var. subcarinata Cushman, Proc. U. S. Nat. 

 Mus., vol. 51, 1917, p. 657. 



Descriftion. — Variety differing from the typical by having instead 

 of a thin broad keel a very narrow one, which is thickened with a 

 rounded periphery, otherwise like the typical. 



Distrihiition. — Tj^pe specimen (U.S.N.M. No. 9123) from Albatross 

 station D5654 in 805 fathoms (1,472 meters). Gulf of Boni, bottom 

 temperature 38.3° F. (3.5° C). Specimens were also obtained from 

 material dredged at the following stations: D5465, in 500 fathoms 

 (914 meters), and D5467 in 480 fathoms (878 meters), east coast of 

 Luzon, and D5582, in 890 fathoms (1,628 meters), off Darvel Bay, 

 Borneo, bottom temperature 38.3° F. (3.5° C). 



From the data given the variety seems to be developed in the 

 deeper, colder waters of the region. 

 182152—21 15 



