stanton.] ARTIIEOPODA. 189 



tricosus, as shown by similarity in form and in the character of the septa, 

 seems to justify its reference to the same genus. 



Scaphites subglobosus Whiteaves is probably identical with this spe- 

 cies. The types of S. mullananus agree with the figures of 8. subglo- 

 bosus in every respect excepting that they do not show the small nodes 

 near the periphery. The latter is reported from the "East Branch of 

 the Poplar river, on the 49th parallel," where it is said to occur in the 

 equivalents of the Montana formation. 



Locality and position. — " Chippewa point, near Fort Benton, on the 

 upper Missouri j Fort Benton group of the upper Missouri Cretaceous 

 series." 



ARTHROPODA. 



CRUSTACEA. 



A few fragments of the legs of a decapod crustacean were found in 

 the Pugnellus sandstone at Poison canyon, Huerfano park, Colorado. 

 They do not show either the generic or specific characters and they are 

 mentioned here simply to record the rare occurrence of crustacean 

 remains in this formation. 



