I'l TIKSMN; A (IKOI'P o| SlENOMYSINS. 



369 



separated al the acetabulum, but lying in their respective positions 



in the sediment. The caudal region, the patella, and a number of foot 

 bones were lost and are represented by casts; otherwise the skeleton 

 belongs to one individual. 



The skeleton of the male has already been described in a previous 

 publication 2 and calls for no further mention here except to say that 



Fig. i. Skull of young specimen of Stenomylus hitchcocki Loomis. 



it is composed of parts of six different individuals. It was originally 

 mounted on a separate base, and temporarily placed in the collection 

 of the paleontological exhibit until it could be used in thepresent group. 

 The skeleton of the female on the other hand pertains to one individual, 

 except the right scapula, the sternum (No. 2,787), and a number of 

 ribs. The distinguishing features of the female skeleton are seen in 

 the less robust development of the different parts, and the larger 

 pelvic cavity. Altogether the group expresses life and action, such 

 as we may well imagine to have been common to these small and very 

 graceful animals. 



Measurements. 



.Male. Female. Voung. 



Cm. Cm. Cm. 

 Length of skeleton from ischial tuberosity to and including 



the scapula at the glenoid cavity 57 53 39 



Height of skeleton at 6th dorsal vertebra 69 63 50 



2 Peterson, O. A., Ann. Car. Mrs., Vol. VII, 1911. pp. 268-271. 



