ART. 5 BIBLIOGRAPHY OF THE CONODONTS HOLMES 25 



the bar. A wide space separates the cusp and the denticles, which 

 in turn are removed from one another by means of a space about 

 equal to the width of a denticle. The characteristic suckerlike mark- 

 ings are present on the downward extension of the main cusp. 

 Holotype.—C2it. No. 11434, U.S.N.M. 



Family PRIONIODINIDAE Ulrich and Bassler, 1926 



Genus HINDEODELLA Ulrich and Bassler, 1926 



HINDEODELLA TENERRIMA, new species 



Plate 9, figs. 6, 7 



A long, thin, sharp pointed cusp rises from a very slender bar. 

 Two broken denticles are on one side of the cusp and nine or ten 

 are on the other side, all widel}' spaced. Due to the concavity of the 

 bar immediately below the cusp, it may be inferred that this is the 

 inner side of the jaw. 



C oty pes.— Csit. No. 11435, U.S.N.M. 



HINDEODELLA MINUXroENS, new species 



Plate 9, fig. 8 



The upright denticles in this specimen are so minute and regularly, 

 though closely, spaced and the bar is so long and flat that this 

 conodont resembles a fine-toothed saw. 



E olotype.— Csit. No. 11436, U.S.N.M. 



HINDEODELLA GERMANA, new species 



Plate 9, fig. 9 



The anterior side of the bar is very thick and bears several needle- 

 like, irregular denticles. On the posterior side the denticles, which 

 slant backward, are alternately long and short. In one or two places 

 two small denticles are found between the longer ones. The pos- 

 terior end of the bar terminates in a spinelike point. 



Holotype.—C^i. No. 11437, U.S.N.M. 



HINDEODELLA SUBTILIS Ulrich and Bassler 



Plate 9, figs. 10, 11 



1926. Hindeodella suMilis Ulrich and Bassler, Proc. U. S. Nat. Mus., vol. 68, 

 art, 12, p. 39, pi. 8, figs. 17-19. 



This species, described from the Hardin sandstone, is well repre- 

 sented in the succeeding Chattanooga black shale, where entire speci- 

 mens, such as those in Figure 10, are not uncommon. The character- 

 istic basketlike expansion at the anterior end and the minuteness and 

 decided alternation of the denticles along the bar are features easily 



