Marsh Collection, Peabody Museum. 201 



This species is the largest one of the genus thus far known, 

 and the remains indicate an animal slightly larger than a rac- 

 coon, which it apparently resembled in its short limbs and 

 heavy build. In one specimen the heel of the last molar is 

 considerably larger than that of other individuals, and is 

 very probably indicative of another species, but until better 

 material is brought to light it is unwise to propose another 

 name. 



The principal measurements are as follows : 

 Type of Limnocyon verus : 



Length of molar and premolar series 47'5 mm 



Length of premolars _ 315 



Length of molars _ 16" 



Length (antero-posterior) of fourth premolar 9*2 



Transverse diameter of fourth premolar (anterior border) 8* 



Length of first molar (antero-posterior external) 11*5 



Transverse diameter (anterior border) 9 '5 



Antero-posterior diameter of last molar (middle) 5* 



Transverse diameter of last molar _ 13- 



Type of Limnocyon riparius : 



Length of molar and premolar series _•_ 46 "5 



Length of premolars 29'5 



Length of molars . 17* 



Height of first molar . 9* 



Transverse diameter of first molar 5* 



Depth of jaw at first molar 12- 



Thickness of jaw at first molar 7* 



Thickness of jaw at symphysis ._ ._ . 8* 



Measurements of other specimens : 



Length of calcaneum _. 33* 



Length of astragalus 21 *5 



Width of astragalus 16* 



Length of a first phalanx of hind foot 19- 



Length of a second phalanx of hind foot 12*5 



The type specimen of Limnocyon verus was found by Mr. 

 J. F. Quigley of the Yale party of 1871, at Grizzly Buttes, 

 Bridger Basin, and the type specimen of L. riparius was 

 found by Mr. Oscar Harger of the same party, at the same 

 locality. Other specimens are from Henry's Fork. 



