72 



BULLETIN 100, UNITED STATES NATIONAL MUSEUM. 



in the bottle had become so obliterated that it was impossible to 

 read it. Therefore it can only be recorded as occuriag in the region. 

 The figure of this specimen is given. 



Reophax findens — Material examined. 



REOPHAX SPICULGTESTUS Cushman. 



Plate 13, fig. 2; plate 11, fig. 1. 

 Reophax spiculotestus Cushman, Proc. U. S. Nat. Mus., vol. 38, 1910, p. 438, fig. 4. 



Description. — Test of medium size, composed of a linear series of 

 elongate chambers, oval, in a straight or more often slightly curved 

 line, contracted at the ends of each chamber, increasing rapidly in size 

 toward the apertural end; perfect adult specimens with six or more 

 chambers; wall thin, composed largely of siliceous sponge spicules, 

 for the most part laid lengthwise of the test and firmly cemented; 

 some sand grains present, usually neatly cemented; aperture fairly 

 large; color, grayish. 



Length up to 2 mm. 



This species occurred at four stations in the region: D5210, off 

 western Samar, 554 fathoms (1,012 meters), bottom temperature 

 52.8° F. (11.5° C); D5236, Pacific Ocean, east coast Mmdanao, 494 

 fathoms (903 meters), bottom temperature 41.2° F. (5.1° C); D5410, 

 between Cebu and Leyte Island, 385 fathoms (704 meters), no 

 bottom temperature given; and D5654, Gulf of Boni, 805 fathoms 

 (1,459 meters), bottom temperature 38.3° F. (3.4° C). 



This differs much in form and size from R. spiculifer H. B. Brady, 

 as well as in the very different appearance of the test. Occurring as 

 it does in company with an abundance of arenaceous species, it 

 shows its selective power in the composition of its test. 



