51 



CLUPEA, Linn. 



Clupea theta, sp. nov, 



Represented by a specimen from the Green Eiver shales near the mouth 

 of Labarge Creek, in the upper valley of Green Eiver. It is a larger 

 species than the G. humilis, Leidy, which is also found at the same 

 locality, and it has a much longer anal fin. Its radii number 26, possibly 

 a few more, as the end appears to have been injured. The dorsal fin is 

 short ; the last ray in advance of the line of the first of the anal. The 

 body is deep. Number of vertebrae from the first interneural spine to the 

 last interhsemal, 29. Depth at first dorsal ray, 0.0485 ; depth at last 

 anal ray, 0.0170; length of 29 vertebrae, 0.0780. 



