FORAMINIFEKA OF THE PHLLIPPINE AND ADJACENT SEAS. 211 



Beautiful specimens of this species are well distributed over the 

 area occurring at numerous stations : Off western Bohol ; Sogod Bay, 

 southern Le3'te; between Marinduque and Luzon; Gulf of Davao; 

 east coast of Luzon, off northern Mindanao; between Siquijor and 

 Bohol; between Negros and Siquijor; off Sibuko Bay, Borneo; and 

 Bouro Island. The depth of these stations ranges from 100 to 700 

 fathoms (183 to 1,280 meters), average depth about 400 fathoms 

 (732 meters). The bottom temperatures where given range from 

 43.3° to 53.9° F. (6.1° to 12.1° C), the average being 49.8° F. (9.8° C). 



While occurring at a large number of stations this is not so well 

 represented in numbers as are other species of the genus. 



Nodosaria obliqua — Material examined. 



Locality. 



9 40 50 N.: 123 39 45 E. 



10 10 00 N. 

 13 21 00 N. 



7 03 00 N. 



11 57 .30 N. 

 ,30 46 45 N. 

 13 28 00 N. 

 13 39 42 N. 

 13 37 30 N. 



8 48 44 N. 



9 23 45 N. 

 9 11 00 N. 

 4 12 44 N. 

 3 53 20 S. 



125 04 15 E. 



122 18 45 E. 



125 39 00 E. 

 121 42 15 E. 

 121 35 08 E. 



123 46 18 E. 

 12;^ 40 39 E . 

 123 41 09 E. 

 123 27 35 E. 

 123 39 30 E. 

 123 23 00 E. 

 lis 27 44 E. 



126 48 00 E. 



Depth 



in 

 fath- 

 oms. 



554 

 530 

 100 

 312 

 190 

 310 

 500 

 560 



441 



254 

 305 

 700 



Bot- 

 tom 

 tem- 

 pera- 

 ture. 



53.9 



52.8 

 50.8 



'49.2 



'45.'3 



53.0 

 53.5 

 43.3 



Character of 

 bottom. 



gn.m 



gv. s., m. 

 gn.m.... 



sft. m 



gy-m.... 

 gy.m.... 

 gn.m.... 

 gy.m.... 

 m 



gy.m. . 

 gn.m. 

 gn. m., 

 gy.m. 



Abundance. 



Rare. 



Few. 



Few. 



Rare. 



Rare. 



Rare. 



Rare. 



Rare. 



Rare. 



Rare. 



Rare. 



Rare. 



Frequent. 



Rare. 



NODOSARIA VERTEBRALIS (Batsch). 



Plate 38, figs. 2, 3; plate 40, fig. 2. 



Nautilus (Orthoceras) vertebralis Batsch, Conch, des Seesandes, 1791, p. 3, No. 



6, pi. 2, figs. 6a, b. 

 Nodosaria vertebralis H. B. Brady, Rep. Voy. Challenger, Zoology, vol. 9, 1884, 



p. 514, pi. 63, fig. 35; pi. 64, figs. 11-14.— Flint, Rep. U. S. Nat. Mus., 1897 



(1899), p. 312, pi. 57, fig. 5.— Cushman, Bull. 71, U. S. Nat. Mus., pt. 3, 1913, p. 



60. pi. 32, fig. 1. 



This is one of the most abundant species in the area, occurring at 

 some stations, as D5201, off southern Leyte, in great abundance. 

 The specimens are well developed and show the distinct character of 

 the sutures very clearly. The last-formed chamber is often much 

 more constricted than the preceding ones, especially in adult speci- 

 mens. The distribution includes the coast of Romblon; Tanon 

 Strait; east coast of Negros; Sogod Bay, southern Leyte; off Burias; 

 off Marinduque; Gulf of Davao; off southern Mindoro: P.ilawan Pas- 

 sage; between Samar and Leyte; Ragay Gulf, Luzon; ani at various 

 places off the coast of Mindanao. 



