FORAMINIFERA OF THE ATLANTIC OCEAN, 



71 



GAUDRYINA cf. G. CONVEXA Cushman. 



Plate 8, fig. 5. 



Gaudrijina convexa Cushman, Bull. 71, U. S. Nat. Mus., pt. 2, 1911, p. 66, figs. 

 lOoa-c (in text). 



There are single specimens from two Albatross stations, D2639 in 

 56 fathoms (102 meters) and D2641 in 60 fathoms (110 meters), 

 both off Florida, which are very close to this species, which I described 

 from the western Pacific in Korean Strait. Except that the triangular 

 portion occupies a larger portion of the test, the specimens from 

 Florida are very similar to the others. 



Gaudryina cf. G. convexa — Material examined. 



GAUDRYINA CURTA, new species. 



Plate 14, figs. 1-4. 



Description. — Test short and broad, tapering, slightly compressed 

 in the later portion, ends bluntly rounded, triserial portion composed 

 of several chambers making up about one-third of the test, later two- 

 thirds made up usually of four rotund chambers in a triserial arrange- 

 ment; chambers few, inflated, distinct; sutures distinct, depressed, 

 especially in the later portion, wall coarsely arenaceous, composed of 

 angular sand grains and an abundant cement of finer material, sur- 

 face smoothly finished; aperture rounded, at the edge of the ventral 

 side at the inner margin of the chamber, the sides continued on the 

 preceding chamber; color reddish-brown. 



Length 2.0-2.5 mm. 



Distribution.— Tjipe-specuaeii (U.S.N.M. No. 16698) from Albatross 

 station D2739, 958 fathoms (1,752 meters), eastern coast of the 

 United States. Very typical specimens of this species, often abun- 

 dant, have occurred at a number of stations from the region of 

 Cape Hatteras north to the Gulf of St. Lawrence, in the cold water 

 off this coast. It is a very different species from Gaudryina scabra 

 H. B. Brady in its much shorter, rotund form, and in its fewer 

 chambers. It is perhaps nearest to Oaudryina paupercula Cushman 

 from the Pacific, but that species has a still shorter fewer-chambered 

 form, and especially in the triserial portion is different, being com- 

 pressed where G. curta is very rounded. 



