28 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 72 



slender denticles diminishing in size toward the extremity and ante- 

 riorly by three or four similar denticles. All of the denticles are also 

 blunt and are very much alike except in length. All are inclined 

 with the main cusp. 



The strong inclination of both main cusp and denticles characterize 

 this species. 



Holotype.—C^it No. 11446, U.S.N.M. 



BRYANTODUS GERMANUS. new species 



Plate 10, fig. 5 



The wide, almost fiat bar is traversed for its entire length by a 

 median line The upper and lower portions of the bar thus lie in two 

 different planes. From the center of the upper half a broad angled 

 and strongly recurved tooth rises. On the concave side of this cusp 

 there is a broad, blunt denticle about as long as the cusp. The other 

 denticles vary in length but are of the same general shape. On the 

 other side of the cusp the denticles are longer, flatter, and very sharp 

 pointed. Narrow but equal spaces separate all of the denticles. 



Holotyfe.—QdA. No. 1144T, U.S.N.M. 



BRYANTODUS SUBANGULATUS, new species 



Plate 10, tig-. G 



This narrow bar is very strongly arched or angulated. On one 

 side of the cusp the denticles are much shorter than those on the other 

 side. All of the denticles become gradually shorter toward the ends 

 of the bar. 



Holotype.—C&t. No. 11448, U.S.N.M. 



Genus EUPRIONIODINA Ulrich and Bassler, 1926 



EUPRIONIODINA GEKMANA, new species- 

 Plate 10, fig. 7 



The moderately arched bar is broad and angulated on one side of 

 the cusp. On the other side it is stout but somewhat flat. Broad, 

 heavy denticles rise from the long side of the bar. The terminal 

 denticle is about as broad as any two of the others. All of the den- 

 ticles are separated by very narrow spaces. There is a wide space on 

 each side of the cusp which is round, very thick, and slightly ex- 

 tended below the bar. On the short side of the bar the denticles are 

 thinner than the others but they are quite substantial looking. They 

 are short and widely spaced. 



Hoiotype.—C^ii. No. 11449, U.S.N.M. 



