FOEAMINIFEKA OF THE PHILIPPINE AND ADJACENT SEAS. 99 



Description. — Test large, globular, in adults usually made up of 

 three visible chambers, one large one and two smaller ones on the 

 opposite side; wall coarsely arenaceous, but with a fairly smooth 

 exterior; aperture at the base of the largest chamber crescentic or 

 semicircular, nearly opposite the suture marking the juncture of the 

 walls of the two smaller chambers; color, grayish-brown. 



Diameter up to 3 mm. 



This species is very much more common than the precedmg, being 

 found at a number of stations in the area. These range in depth 

 from 106 to 494 fathoms (194 to 903 meters), and bottom tempera- 

 tures 41.2° to 50.4° F. (5.1° to 10.1° C). 



The question may be raised as to whether or not this may be the 

 microspheric form of the preceding species, but from its occurrence 

 in far greater numbers and at such a large number of stations it would 

 seem not to justify this idea, being the opposite of the usual occur- 

 rence of the microspheric form of this species. 



All the records for this species are in the Philippine Archipelago, 

 none of the records being from the region to the southward. 



Ammosphaeroidma grandis — Material examined. 



Genus SPHAERAMMINA Cushman, 1910. 



Sphaerammina Cushman, Proc. U. S. Nat. Mus., vol. 38, 1910, p. 439. 



Description. — Test composed of a series of chambers, the last one 

 formed completely enveloping the preceding ones, but the axis 

 straight; wall arenaceous. 



Ty2:)e of the genus. — Spliaerammina ovalis Cushman. 



This genus strongly reminds one of EUipsoidina, but there is an 

 arenaceous wall, and the connections between the apertural ends of 

 the chambers are indistinct or wanting. With its straight axis it 

 belongs to the Reopliacinae, and holds a relation to Reophax and 

 Hormosina similar to that which Glandulina holds to Nodosaria. 



