444 



BULLETIN 100, UNITED STATES NATIONAL MUSEUM. 



and 23.8° C), but the lower of these is from the deepest station, 

 375 fathoms (686 meters), where the specimen was evidently acci- 

 dental, and the next deepest one 37 fathoms (68 meters). All the 

 other stations are in still shallower water, with consequent higher 

 bottom temperatures. 



The most of the stations are from the shallow water about the 

 Sulu Sea, with a few other localities scattered about the Archipelago. 

 It was not found in the region to the southward, largely on account 

 of the deeper water in which the dredgings in that area were made. 



Genus MASSILINA Schlumberger, 1893. 



This genus includes species in which the early developm.ent is 

 quinc^ueloculine, the later development becoming very much like 

 Spiroloculina. 



To this genus are referred those species whose early development 

 is typical quinquelocuiine, some of whicli have been previously re- 

 ferred to Spiroloculina. 



MASSILINA SECANS. var. RETICULATA Heron-Allen and Earland. 



Massilina secans, var. reticulata Heron-Allen and Earland, Trans. Zool. Soc. 

 London, vol. 20, 1915, p. 582, pi. 45, figs. 1-4. 



Specimens which have the general characters of this variety de- 

 scribed by Heron-Allen and Earland from the Kerimba Ai'chipelago, 

 were obtained at seven stations, ranging in depth from 10 to 88 fathoms 

 (18 to 161 meters), the average being 30. 1 fathoms (55 meters). 

 Bottom temperatm'es were not given for one of these stations, but 

 would probably be high in such shallow water. 



The stations which include it are as follows: Sulu Archipelago, 

 Tawi Tawi, Jolo, and off western Mindanao; China Sea, off southern 

 Luzon; Ragay Gulf, Luzon; and Tacloban Anchorage. 



