rORAMINIFERA OF THE PHILIPPINE AND ADJACENT SEAS. 87 



Both the bottom temperatures, which are much higher, and the 

 depths, which are much less than the preceding species, show that it 

 has a different habitat. 



It may be most easily distinguished from C. cancellata by its com- 

 pressed form, depressed umbilical region, and from both C. cancellata 

 and C. compressa by its fewer chambers. 



Cyclammina pauciloculata — Material examined. 



CYCLAMMINA PUSILLA H. B. Brady. 



Plate 16, figs. 4a, b. 



Cyclammina pusilla H. B. Brady, Quart. Joum, Micr. Sci., vol. 21, 1881, p. 53; 

 Rep.Voy. Challenger. Zoology, vol. 9, 1884, p. 353, pi. 37, figs. 20-23.— Cushman, 

 Bull. 71, U. S. Nat. Mus., pt. 1, 1910, p. Ill, fig. 172 (in text). 



This small species was found at five Albatross stations, as follows : 

 D5236, in 494 fathoms (903 meters), Pacific Ocean, east coast of 

 Mindanao, bottom temperature 41.2° F. (5.1° C); D5247, Gulf of 

 Davao, 135 fathoms (247 meters); D5590, Sibuko Bay, Borneo, 310 

 fathoms (567 meters), bottom temperature 44.3° F (6.8° C); 

 D5621, between Gillolo and Makyan Islands, 298 fathoms (545 

 meters); and D5659, Gulf of Boni, 702 fathoms (1,284 meters), 

 bottom temperature 39.0° F. (4.1° C). 



It may be distinguished from all the preceding species by its much 

 smaller size, its diameter being 1 mm. or less. 



Cyclammina pusilla — Material examined. 



