82 THE WASATCH AKD BEIDGER FAUN^. 



small, with numerous concentric and no radiating giooves. Fin radii: D. 11, 

 —8 (last split); C. 8—19—8; A. II— 9. V. 7, p. 15. 



Measurements. 



M. 



Total length No. 1 0743 



Cranium to supraclavicle 018 



Length to base D. 1 029 



Length to end vertebral colonin 06 



Length of A. II 008 



Length of cranium No. 2 .0175 



Length to prcopcrculum 012 



Length to D. I 0275 



Length to A. 1 043 



Five more or less complete specimens of this fish were obtained by 

 Lucius E. Ricksecker from the Green River shales, and I dedicate it to him 

 in recognition of his interesting discoveries in this department. 



Its difference from E. levatus is seen in the more anterior position of 

 the dorsal fin, more numerous vertebrae, etc. 



Ebismatopteeus ENDLicni Cope. 



Bulletin U. S. Geol. Snrv. Terrs., 1877, p. 812. 

 Plato Xn, fig. 5. 



The radial formula in this fish is: D. Ill— 11 ; C. 6-19-6; A. Ill— 

 7. V. 7. The vertebrae are: D. 13; C. 17; Centra between the lines of 

 the first interneural and first interhaemal spines, 10. Ten rows of small 

 scales visible above the vertebral column. 



The general form of the fish is stout, and the caudal peduncle is deep. 

 The top of the head is convex, and the eye large. The front descends 

 abruptly to the rather projecting muzzle in the specimen, but whether this 

 is a distortion or not is uncertain. The coracoid is wide and well produced 

 backwai-d, while the clavicle is, as usual, directed forward. The femur is 

 slender, and connected with its fellow by a posterior transverse bar. The 

 greatest depth is a little less than one-fourth the length without tlie caudal 

 fin. The diameter of the eye is one-fourth the length of the head. The 

 origin of the ventral fin is in advance of the first dorsal ray; the origin of 



