64 BULLETIN 71, UNITED STATES NATIONAL MUSEUM. 



subcircular opening near, but somewhat away from, the inner border 

 of the chamber; color gray. 



Length 1-5 mm. 



Distribution. — The specimens recorded by Flint and figured by 

 him as G. subrotundata Schwager were from the Atlantic. The 

 specimens recorded by Goes from the eastern Pacific as G. rugosa 

 d'Orbigny, prove upon examination to belong to this new species. 

 Specimens were also common in material from Nero station 990, in 

 859 fathoms, off Guam. 



It is possible that the Challenger specimens referred to G. subro- 

 tundata by Brady may also belong to this species, especially those 

 from the West Indies. The specimens recorded by Goes seem to be 



Fig. 102.— Gaudryina flintii. X 20. o, front view; b, apertural view; c, side view. 



neither the G. rugosa of d'Orbigny nor the recent species referred to 

 G. rugosa by Brady. This species differs from G. subrotundata in 

 the large size, more circular form in cross section, in the general 

 tapering form, and in having the aperture circular and in the end wall. 



GAUDRYINA QUADRANGULARIS Bagg. 



Gaudryina quadrangularis Bagg, Proc. U. S. Nat. Mus., vol. 34, 1908, p. 133, 

 pi. 5, fig. 1 . 



Description. — Test elongate, tapering abruptly at the initial end, 

 composed of an early trihedral portion with acute angles made up of 

 a triserial group of chambers, and a later more or less quadrangular 

 portion composed of chambers biserially arranged; wall coarsely 

 arenaceous and rather roughly cemented; aperture an elongate 

 orifice between the inner border of the chamber and the adjacent 



