10 



BUULETIN 104, UNITED STATES NATIONAL MUSEUM. 



It differs in its wall and cement from typical R. scorpiurus the yel- 

 lowish gray cement being peculiar. This species was first described 

 from the Philippines but is ap})arently widely distributed. 



Reophnx agglutinntus — material examined. 



REOPHAX AGGLUTINATUS Cushman, var. GLOMERATUS, new variety. 



Plate 2, fig. 6; plate 3, figs. 1, 2. 



Description. — Variety differing from the typical in the larger 

 size, the very distinct globular chambers rapidly increasing in size; 

 interior smooth, chambers in a straight or much-curved line. 



Length up to 10 mm.; diameter of largest chamber, 4.5 mm. 



Distribution.— Hj^Q specimen (U.S.N.M. No. 10656) from D2043 

 off the northeastern coast of the United States in 1,467 fathoms (2,683 

 meters). At this station it is abundant and occurs at five other sta- 

 tions in the same general region. 



This is a much larger form than the typical, and in the globular 

 chambers and rapidly increasing size is distinct. So far as the 

 material shows, it is closely limited to this area between latitude 38° 20' 

 N. and 40° 09' N. and longitude 67° 09' W. and 70° 57' W. The 

 average depth is over 1,500 fathoms (2,743 meters). This maybe 

 specifically distinct from R. agglutinatus, but until more is known of 

 the distribution of the two I prefer to leave it as a variety. 



Reophax agglutinatus, var. glomeratus — material examined. 



Cat. 

 No. 



10655 

 10656 

 10657 

 10658 

 10659 

 10660 



Locality. 



Depth 



in 

 fath- 

 oms. 



Bot- 

 tom 

 tem- 

 pera- 

 ture. 



Character of 

 bottom. 



Abundance. 



39 26 16 N.; 70 02 37 W.. 

 39 49 00 N.; 68 28 30 AV.. 



39 05 SON.; 70 44 30 W.. 



40 09 30 N.; 67 09 00 W.. 

 .38 20 00 N.; 70 08 30 W. . 

 38 29 30 N.; 70 57 00 W.. 



1,362 

 1,467 

 1,525 

 1,356 

 1,859 

 1,631 



38.5 

 36.9 

 37.8 



glob, oz 



glob, oz 



gy. oz 



gy. glob, oz 



br. oz 



br. oz. for . . 



Rare. 



Abundant. 



Few. 



Few. 



Rare. 



Few. 



REOPHAX BILOCULARIS Flint. 



Plate 3, figs. 3, 4. 



Reophax bilocularis Flint, Rep. U. S. Nat. Mus., 1897 (1899), p. 273, pi 17, 

 fig. 2.— Cushman, Bull. 71, U. S. Nat. Mus., pt. 1, 1910, p. 90, fig. 127a, b. 



Description. — Test composed of two chambers, each longer than 

 broad and set in a straight line or at an angle, ends rounded, somewhat 

 constricted between; walls of various material, most commonly of 



