rOKAMINIFERA OF THE PHILIPPINE AND ADJACENT SEAS. 



97 



Fine large specimens of this species are found at a great number of 

 stations in the region. Although not definitely proven from the two 

 sizes that appear, it would seem that both microspheric and megalo- 

 spheric specimens of this species may be present. 



In depth the stations range from 260 to 1,570 fathoms (475 to 

 2,871 meters), bottom temperatures from 36.3° to 49.4° F. (2.3° 

 to 9.7° C). 



From the kno^^^l conditions under which this species is best de- 

 veloped it is not strange to find few records in the Philippines proper, 

 but most of them from the deeper water to the south. It was not 

 found at all among the islands, but off the Pacific coast of Mindanao 

 and China Sea off Luzon. Southward it was found in Sibuko Bay, 

 Borneo; north of Celebes; between Gillolo and Makyan Islands; 

 Patiente Strait; and Flores Sea. 



Trochammina glohigeriniformis — Material examined. 



Genus AMMOCHILOSTOMA Eimer and Fickert, 1899. 



AMMOCHILOSTOMA ROTUNDA TA Cushman. 



Ammochilostoma rotundata Cushman, Proc. U. S. Nat. Mua., vol. 44, 1913, p. 

 637, pi. 79, fig. 1. 



Description. — Test nearly spherical or somewhat elongate, of few 

 chambers, the last-formed chamber nearly covering all the previ- 

 ously formed ones; chambers arranged in an irregular coil; wall 

 fahly thick, of fine sand grains with a grayish-brown cement; aper- 

 ture narrow and elongate, near the middle of the terminal face of 

 the last-formed chamber, but remote from the border of the preced- 

 ing chamber. 



Diameter about 1 mm. 

 182152—21 7 



