FORAMINIFEKA OF THE PHILIPPINE AND ADJACENT SEAS. 171 



Subfamily Cassidulininae. 



Genus CASSIDULINA d'Orblgny, 1826. 



CASSIDULINA LAEVIGATA d'Orbigny. 



Plate 31, fig. 7. 



Cassidulina laevigata d'Orbigny, Ann. Sci. Nat., vol. 7, 1826, p. 282, pi. 15, figs. 

 4, 5;Modeles, 1826, No. 41. — H. B. Brady, Rep. Voy. Challenger, Zoology, vol. 9, 

 1884, p. 428, pi. 54, figs. 1-3.— Cushman, Bull. 71, U. S. Nat.Mii8.,pt. 2, 1911, 

 p. 96, figs. 150a, b (in text), 



The only stations at which this species was noted were D5156, 

 Sulu Archipelago, Tawi Tarn Group, 18 fathoms (33 meters), D5172, 

 vicinity of Jolo, 318 fathoms (582 meters), and D5301, China Sea, 

 vicinity Hongkong, 208 fathoms (381 meters), bottom temperature 

 50.5° F. (10.2° C). 



Cassidulina laevigata — Material examined. 



CASSroULINA SUBGLOBOSA H. B. Brady. 



Plate 32, fig. 2. 



Cassidulina subglobosa H. B. Brady, Quart. Journ. Micr. Sci., vol. 21, 1881, p. 

 60; Rep. Voy. Challenger, Zoology, vol. 9, 1884, p. 430, pi. 54, figs. 17a-c.— Cush- 

 man, Bull. 71, U. S. Nat. Mus., pt. 2, 1911, p. 98, fig. 152 (in text). 



At numerous stations well scattered over the region this species 

 has occurred as follows: Balayan Bay and Verde Island Passage; 

 Pacific Ocean; east coast of Mindanao; east coast of Luzon between 

 San Bernardino Strait to San Miguel Bay; vicinity of Sibuko Bay, 

 Borneo; between Gillolo and Makyan Islands; vicinity of Bouro 

 Island; and in the Gulf of Boni. 



There seem to be two well-defined forms of this species. The 

 first of these is a form with few visible chambers, and similar to that 

 figured by Brady in the CJiallenger Report (pi. 54, fig. 17) ; the other is 

 a form with more numerous chambers and the apertural end broadly 

 truncate and flattened, the aperture occupying the central por- 

 tion. The latter form is found only in the region to the south and 

 may represent a different species. A similar form is found off the 

 coast of New Zealand. 



