FOKAMINIFERA OF THE PHILIPPINE AND ADJACENT SEAS. 255 



This species was found in material from several Albatross sta- 

 tions. These include the following localities: Sulu Sea, off western 

 Mindanao; Sogod Bay, southern Le3'te Island; between Marin- 

 duque and Luzon; Batangas Bay; China Sea, off southern Luzon; 

 between Siquijor and Bohol Islands; between Negros and Siquijor; 

 and Gulf of Boni. 



The various stations range in depth from 170 to 805 fathoms 

 (311 to 1,472 meters), with an average depth of 375 fathoms (686 

 meters). The bottom temperatures range from 41.2° F. to 53.3° F. 

 (5.1° to 11.8° C), the average being 50.9° F. (10.5° C). 



There seem to be two more or less distinctive forms in the mate- 

 rial examined — one with short globular chambers in the final cham- 

 bers, the other mtli more pyriform and elongate ones with a slight 

 neck. Material was insufficient to definitch' determine the con- 

 stancy of these differences, although specimens easily fell into one 

 or other of the two groupings. 



Marginulina glabra — Material examined. 



MARGINULINA STRIATULA Cnshman. 



Plate 41, fig. 2. 



Marginulina striatula Cushman, Bull. 71, U. S. Nat. Mus., pt. 3, 1913, p. 79, 

 pi. 23, fig. 4. 



Very typical material of this species was obtained from 'three Alba- 

 tross stations: D5178, in 78 fathoms (143 meters), off Romblon; 

 D5201, in 554 fathoms (1,012 meters), Sogod Bay, southern Leyte 

 Island, bottom temperature 52.8° F. (11.5° C); and D5368, in 181 

 fathoms (331 meters), oft' Marinduque Island. 



This species is easily distinguished from the ])re<'eding by form 

 alone, as it has several chambers forming a moniliform series, with 

 the axis straight and the coiled portion limited to the extreme base. 

 The striations also help as well as the definite, well-developed neck 

 with the four-radiate aperture. 



