152 BULLETIN 100, UNITED STATES NATIONAL MUSEUM. 



GAUDRYINA ATTENUATA Cnshman. 



Plate 30, fig. 4. 



Gaudryina attenuata Cushman, Proc. IT. S. Nat. Mus., vol. 44. 1933, p. 036, pi. 

 80, fig. 3. 



Description. — ^Test elongate, composed of numerous chambers, 

 early portion triserial, triangular in cross section with sharp angles, 

 biserial chambers numerous, nearly as high as broad, in later devel- 

 opment each chamber running nearly or quite to the opposite side of 

 the test; wall rough, composed or rough sand grains and sponge 

 spicules roughly cemented, aperture at first textularian, becoming 

 more nearly circular in the last-formed chambers; color light gray. 



Length about 3 mm. 



Type specimen. — (Cat. No. 8508, U.S.N.M.) irom. Albatross station 

 D5259, off northwestern Panay, 312 fathoms (571 meters). 



This species differs from G. filiformis Berthelin in its sharply tri- 

 angular basal portion and in its more loosely biserial form, as well as 

 the form of the aperture. It differs from G. pseudojiliformis Cush- 

 man in the aperture, the very rough surface, and more loosely 

 biserial character. The apertural end tends to become more atten- 

 uate, but not to assume a clavuline character. 



The species has been found at two other stations in the region as 

 follows: D5586, Sibuko Bay, Borneo, 347 fathoms (635 meters); and 

 D5592, the neighboring station, 305 fathoms (558 meters). 



Gaudryina attenuata — Material examined. 



GAUDRYINA ROBUSTA Cushman. 



Plate 30, figs. la-c. 



Gaudryina robusta Cushman, Proc. U. S. Nat. Mus., vol. 44, 1913, p. 636, pi. 78, 

 fig. 2. 



Description. — Test large, stout, early portion sharply triangular, 

 triserial, later chambers biserial, rounded ; wall made up of fine sand 

 grayish in color, with numerous black specks; sm'face somewhat 

 rugose, sutures slightly depressed, sides of early portion somewhat 

 concave; aperture textularian, in a rather deep reentrant of the 

 inner border of the chamber. 



Length 4 mm.; breadth 2 mm. 



