12 BULLETIN 11, UNITED STATES NATIONAL MUSEUM. 



Description. — Test plano-convex, the dorsal side convexly rounded 

 the ventral side flattened or slightly concave; peripheral margin 

 rounded, keeled; chambers few in each whorl, usually about five in 



the last-formed whorl; su- 

 tures slightly depressed 

 dorsally and limbate with 

 clear shell material as is 

 also the margin except in 

 the last few chambers, 

 finely perforated and hya- 

 line; ventral side with the 

 sutures much depressed, 

 the chambers smooth, the 

 |Q ]j last-formed chamber occu- 



figs. 10, u.— discorbis globularis (d'Orbigny). (Adapted py ln g nearly hah the sur- 

 from d'orbigny's original figijres.) io. Dorsal view, face Derioherv carinate 



11. Ventral view. . ' ... ~. 



with radiating lines; aper- 

 ture fairly large, irregular, elongate, at the inner margin of the 

 chamber. 



Diameter 0.55-0.85 mm. 



Distribution. — The only published record for this species is that of 

 Rhumbler, who found it in shallow water material from Laysan 

 Island. I have had the species from Albatross station D4875 in 59 

 fathoms, eastern channel of Korea Strait. 



DISCORBIS GLOBULARIS (d'Orbigny), var. BRADYI, new variety. 



Plate 8, fig. 1. 



Discorbina globularis H. B. Brady (not D. globularis d'Orbigny), Rep. Voy. 

 Challenger, Zoology, vol. 9, 1884, pi. 86, fig. 8. 



Description. — Chambers of earlier portion of the test on the dorsal 

 side clearly outlined with limbate sutures; ventral side with a periph- 

 eral border with a milled edge, the chambers more or less swollen, 

 the proximal portion separated from the rest, and the last-formed 

 chamber with a peculiar bifid indentation extending inward from the 

 peripheral region ; color brownish. 



Diameter about 0.80 mm. 



Distribution. — Type-specimen of variety, from Albatross station 

 D4893 in 106 fathoms, bottom temperature 55.9° F. off Japan 

 (U. S.N. M. No. 9027). 



This variety seems distinct from the typical D. globularis 

 d'Orbigny. The limbations and peculiar conditions of the ventral 

 side seem sufficient to distinguish it. 



