FORAMINIFERA OF THE PHILIPPINE AND ADJACENT SEAS. 241 



temperature 49.3° F. (9.6° C); D5278, in 102 fathoms (187 meters), 

 China Sea off southern Luzon, bottom temperature 59.6° F. (15.3° 

 C.) ; D5537, in 254 fathoms (465 meters), between Negros and Siquijor, 

 bottom temperature 53.5° F. (11.8° C); and D5579, in 175 fathoms 

 (320 meters), off Darvel Bay, Borneo, bottom temperature 55.3° F. 

 (12.9° C). 



This variety is one of the most beautifully sculptured of all the 

 genus. It is an extreme modification of the costae of the chambers 

 which are developed at the expense of those of the sutures. 



Cristellaria costata, var. multicosta — Material examined. 



CRISTELLARIA COSTATA (FIchtel and Moll), Tar. SUBDECORATA Cnshman. 



Plate 47, figs. 4, 5. 



Cristellaria costata (Fichtel and Moll), var. subdecorata Cushman, Proc. U. S. 

 Nat. Mue., vol. 51, 1917, p. 659. 



Description. — Varietj'- with the costae of the sutures the predomi- 

 nant factor in the ornamentation, the areas between with fine costae 

 or striae, anastomosing; the costae of the sutures large and well- 

 marked, sharply raised above the sm-face of the test, the umbilical 

 region covered Avith a thick cluster of irregular bosses; periphery with 

 traces of a keel between the sutures. 



Diameter up to 4 mm. 



Distribution. — Type specimen (U.S.N.M. No. 9131) from Albatross 

 station D5454, in 153 fathoms (279 meters), east coast of Luzon. 

 The variety was common at this station and occmTed more or less 

 frequently at the following Albatross stations: D5115, in 340 fathoms 

 (622 meters), off Balayan Bay; D5 121, in 108 fathoms (198 meters), 

 east coast of Mindoro; D5191, Tanon Strait, in 258 fathoms (622 

 meters), bottom temperature 62.8° F. (17.1° C); D5259, in 312 fath- 

 oms (571 meters), off northwestern Panay, bottom temperatm'e 49.3° 

 F. (9.6° C); D5261, off southeastern Mindoro, in 145 fathoms (265 

 meters); D5388, in 226 fathoms (414 meters), between Burias and 

 Luzon, bottom temperature 51.4° F. (10.8° C); D5291, in 173 

 fathoms (316 meters), China Sea off southern Luzon, bottom tem- 



182152—20 16 



