120 BULLETIN 104, UNITED STATES NATIONAL MUSEUM. 



meters), latitude 38° 2o' N., longitude 35° 50' W., and 346, in 2,350 

 fathoms (4,298 meters), latitude 2° 42' S., longitude 14° 41' W. 



It is not recorded from the shallower waters of the eastern North 

 Atlantic, nor have I found it in the Alhafros.s or other collections from 

 the western Atlantic. 



VIRGULINA MEXICANA, new species. 



Plate 23, fig. 8. 



Description. — Test elongate, compressed, broadly fusiform, broadly 

 rounded at the initial end, apertural end bluntly pointed; chambers 

 few, rounded, not well distinguished from one another; sutures 

 indistinct, not depressed; wall smooth and polished, translucent; 

 aperture elongate, oval, broadest at its inner end. thence narrowing 

 toward the edge of the chamber; color white. 



Length 0.4-0.5 mm. 



Distribution. — Type-specimen (U.S.N.M. No. 16277) from Alba- 

 tross station D2395, in the Gulf of Mexico, in 347 fathoms (635 meters). 

 It has also occurred at the adjacent station D2396 in 335 fathoms 

 (613 meters). 



This is a broad, somewhat compressed form, with rounded sides, 

 very smooth surface, the chambers and sutures indistinct, and is 

 unlike any of the others found in the collections from the western 

 Atlantic. 



Virgulina mexicana- material examined. 



VIRGULINA (?) ADVENA, new species. 



Plate 25, figs. 1-3. 



Description. — Test elongate, tapering, compressed, initial end 

 bluntly rounded, apertural end very broadly rounded, semicircular, 

 test broadest near the initial end, thence gradually tapering to the 

 initial end, sides nearly straight; chambers few, irregularly biserial, 

 rather indistinct; sutures somewhat indistinct, little if at all de- 

 pressed; wall thin, translucent, smooth, finely plinctate; aperture 

 long and narrow, at the end of the final chamber; color white. 



Length about 0.6 mm. 



Distribution. — ^Type-specimen (U.S.N.M. No. 16280) from Albatross 

 station D2713 in 1,859 fathoms (3,399 meters). The species also 

 occurred at D2542 in 129 fathoms (236 meters). 



