FORAMINIFERA OF THE PHILIPPIKE AND ADJACENT SEAS. 395 



SPIROLOCULINA CANALICULATA d'Orbigny. 



Plate 80, figs. 3 a, b. 



SpirolocuKna canaliculata d'Orbiony, Foram. Foss. Vienne, 1846, p. 2G9, pi. 16, 

 figs. 10-12.— CusHMAX, Bull. 71, U. S. Nat. Mus., pt. 6, 1917, p. 30, pi. 4, 

 figa. 1-3. 



Spiroloculina impressa H. B. Brady (not Terquem), Rep. Voy. Challenger, Zo- 

 ology, vol. 9, 1884, p. 151, pi. 10, figs. 3, 4. 



This species is characterized hj the deeply concave periphery 

 between the sharply extended sides of the chambers. 



It occurs in characteristic form at 24 stations in the region, ranging 

 in depth from 18 to 1,262 fathoms (33 to 2,309 meters), the average 

 204 fathoms (373 meters). Bottom temperatures for the 10 stations 

 recorded range from 44.3° to 75.7° F. (6.8° to 24.2° C), with the 

 average slightly less than 57° F. (13.8° C). 



The stations at which it is recorded as common are in depths, for 

 the most part, of less than 100 fathoms (183 metei"s). At the others 

 the specimens were usually few. 



The following general localities are represented: Sulu Sea, off west- 

 ern Mindanao; about the Tawi Tawi group and near Basilan; China 

 Sea, off southern Luzon and off Formosa; Palawan Passage, between 

 Loyte and Mindanao; off Romblon; off eastern Panay; off northern 

 Cebu; Sogod Bay, southern Leyte; east of Masbate; between Burias 

 and Luzon; between Marinduque and Luzon; between southeastern 

 Mindoro and Verde Island Passage. These localities cover the 

 Archipelago very we)! except the open Pacific coast. Southward a 

 few specimens were fomid at stations in Darvel Bay and Sibuko Bay, 

 Borneo, and from Pitt Passage. 



Spiroloculina canaliculata — Material exmained. 



