FOEAMINIFERA OF THE PHILIPPINE AND ADJACENT SEAS. 341 



ing from 36.7° F to 44.0° F. (2.6° C. to 6.6° C), ^vith the average 

 40.3° F. (4.6° C). From the known records of this species it is a 

 deep-water form, and would hardly be expected inside the xirchi- 

 pelago unless in the Sulu Sea. 



At D5236 a peculiar modification of the species occurs, where the 

 broad carina instead of being thin and translucent, as in typical speci- 

 mens, often becomes encrusted with fine sand grains, even to such an 

 extent that it becomes in some cases thicker than the central cham- 

 bers. This character was not noted at any of the other stations. 



Pulvinulina pauperata — Material examined. 



PULVINULINA SCHREIBERSII (d'Orbigny). 



Rotalina schreibersii d'Orbigny, Foram. Foss. Vienne, 1846, p. 154, pi. 8, figs. 4-6. 



Pulvinulina schreibersii Parker and Jones, Philos. Trans., vol. 155, 1865, p. 

 393.— H. B. Brady, Rep. Voy. Challenger, Zoology, vol. 9, 1884, p. 697, pi, 

 115, figs. la-c. — Chapman, Trans. New Zealand Inst., vol. 38, 1905, p. 106. — 

 CusHMAN, Bull. 71, U. S. Nat. Mus., pt. 5, 1915, p, 62, fig. 59 (in text). 



From the available records this species is largely limited to the 

 Indo-Pacific and Mediterannean regions. Brady records it from 

 seven Challenger stations from the south Pacific, ranging in depth 

 from 3 to 155 fathoms (5 to 283 meters). 



Pulvinulina schreibersii. — Material examined. 



