FORAMINIFERA OF THE PHILTPPINE AND ADJACENT SEAS. 477 

 BILOCUHNA DENTICULATA (H. B. Brady), var. STRIOLATA H. B. Brady. 



Plate 98, figs. 2a-c. 



Biloculina ringens (Lamarck), var. striolatu H. B. Brady, Rep. Voy. Challenger, 

 Zoology, vol. 9, 1884, p. 143, pi. 3, figs. 7, 8. — ^Millett, Joiirn. Roy. Micr. Soc, 

 1898, p. 262, pi. 5, fig. 8. 



Biloculina denticulata, var. striolata Cushman, Bull. 71, U. S. Nat. Mus., pt. 6, 

 1917, p. 80, pi. 33, figs. 2, 3. 



This variety is much less common than the typical form of the 

 species, occurring at but five stations in the region D5139, off Jolo 

 in 20 fathoms (37 meters) ; D5141, the neighboring station, 29 fathoms 

 (53 meters); D5159, off Tawi Tawi in 10 fathoms; D5179, off Romblon 

 in 37 fathoms (168 meters); and from the exterior of a pearl oyster 

 from Jolo Jolo. 



Evidently the variety is like the typical form in being most at 

 home in shallow, warm water. 



Biloculina denticulata, var. striolata — Material examined. 



BILOCULINA COMATA H. B. Brady. 



Plate 96, figs. 3a, b. 



Biloculina comata H. B. Brady, Quart. Journ. Micr. Sci., vol. 21, 1881, p. 45; 

 Rep. Voy. Chalknger, Zoology, vol. 9, 1884, p. 144, pi. 3, figs. 9a, 6.— Cush- 

 man, Bull. 71, U. S. Nat. Mub., pt. 6, 1917, p. 81, pi. 34, fig. 1. 



As known elsewhere this species occurs 

 only in waters of considerable depth. 

 Specimens occurred at 21 stations, rang- 

 ing in depth from 50 to 901 fathoms (91 

 to 1,648 meters), the average being 375 

 fathoms (686 meters). Bottom tempera- 

 tures range from 38.2° to 59.6° F. (3.4° 

 to 15.3° C), the average being 51° F 

 (10.5° C). 



The only stations at which this species is at all frequent range 

 from 256 to 494 fathoms (468 to 903 meters). 



These localities include stations in the Philippine region and about 

 the Sulu Sea, off western Mindanao, and off Tawi Tawi; Sogod Bay, 



Fig. 51.— BaocuLiNA comata H. B. 

 Brady. X 100. Apeeture of 



SPECIMEK FROM ALBATROSS STA- 

 TION D5236. 



