230 



CAN IS. 

 Cams indiankxsis. 



The fossil specimen pertaining to a wolf consists of the right ramus of a 

 lower jaw, represented in Fig. 2, Plate XXXI. The specimen indicates an 

 animal larger than any individuals of the recent wolves of North America 

 and Europe, as represented by skulls I have had the opportunity of examin- 

 ing in our Museum of the Academy. It, however, indicates a less robust 

 animal than that formerly described by me under the name of Canis primcevus, 

 and subsequently as C. indianensis, from an , upper-jaw fragment, found in 

 association with remains of Megalonyx, &c., on the banks of the Ohio River, 

 Indiana. 



The specimen likewise indicates a less robust species than the C. Haydeni, 

 of the Pliocene formation of the Niobrara River, but a larger one than C. 

 scevus, of the same formation. 



I am disposed to view the specimen as pertaining to the C. indianensis, 

 and perhaps it was not different from the existing 0. occidentalis. 



Measurements of the fossil, in comparison with those of the skull of a large 

 wolf from the Columbia River, Oregon, and of another from Germany, are as 

 follows : 



Length of jaw from condyle to fore part of canine 



Depth of jaw at condyle 



Depth of jaw at coronoid process 



Depth of jaw at sectorial molar 



Depth of jaw at second premolar 



Length of molar series with canine 



Length of molar series 



Anteroposterior diameter sectorial molar 



Autero-posterior diameter canine = . 



Fossil 

 jaw. 



Lines. 

 96.0 

 21.2 

 40.0 

 18.0 

 16.6 

 66.0 

 51.0 

 16.1 

 8.1 



Oregon 

 •wolf. 



Lines. 

 90.0 

 20.5 

 36.4 

 17.0 

 14.0 

 61.0 

 50.0 

 11.6 

 0.S 



European 

 wolf. 



Lines. 

 86.0 

 20.5 

 37.5 

 15.0 

 12.5 

 55.4 

 45.0 

 14.3 

 6.2 



LUTRA ? 



A specimen of a tibia, submitted to my inspection by the Smithsonian 

 Institution, is represented in Fig. 4, Plate XXXI. It was presented by 

 Clarence King, and was obtained by him on Sinker Creek, Idaho, in associ- 

 ation with remains of Equus excehus and Mastodon mirificus. 



