FORAMINIFEKA OF THE PHILIPPINE AND ADJACENT SEAS. 115 

 Textularia rugosa. — Material examined. 



TEXTULARIA SIPHONIFERA H. B. Brady. 



Plate 21, figs. 4-7. 



Textularia siphoni/era H. B. Brady, Quart. Journ. Micr. Sci., vol. 21, 1881, p. 53; 

 Rep. Voy. Challenger, Zoologj', vol. 9, 1884, p. 362, pi. 42, figs. 25-29.— Cush- 

 MAN, Bull. 71, U. S. Nat. Mus., pt. 2, 1911, p. 17, figs. 28, 29 (in text). 



Spiroplecta siphoni/era Chapman, Proc. Roy. Soc. Victoria, vol. 22, 1909 (1910), 

 p. 272, pi. 53, fig. 1. 



This is one of the most abundant species of the genus in the shal- 

 low water of the region. The depth, except in six cases, is less than 

 90 fathoms (165 meters), most of them being less than 25 fathoms 

 (46 meters). Single specimens have occurred in deeper water at 

 D5201, Sogod Bay, southern Leyte Island, 554 fathoms (1,012 

 meters), bottom temperature 53.8° F. (12.1° C); D5569, north of 

 Tawi Tawi Group, 303 fathoms (554 meters), bottom temperature 

 52.3° F. (10.1° C); D5576, north of Tawi Tawi, 277 fathoms (506 

 meters), bottom temperature 53.^3° F. (11.8° C). The temperatures 

 at the other stations are usually not given for the shallow water, but 

 in the single case recorded it is 75.7° F. (24.2° C). 



As a rule there are six series of siphons, but specimens with eight 

 series are not infrequent. Specimens were found in which one of 

 the series of siphons was split into two and later on were united. 



