244 ANNUAL RECORD OF SCIENCE AND INDUSTRY. 



than the original leg ; and, on visiting this same place him- 

 self, Mr. Maydell found portions of skin and hair, but was led 

 to conclude that what was found was broken off from the car- 

 cass, of which the greater part had been carried away by one 

 of the floods of the country. 



In the course of this research on the part of Mr. Maydell 

 he obtained information of two other similar cases, but he 

 was not more successful in his search for these than for the 

 first. Dr. Von Schrenck, in his communication, gives a full 

 account of all the steps taken in connection with these dis- 

 coveries, and discusses at length the methods by which the 

 inhumation of such gigantic animals might have taken place. 

 Melanges Blologiques de V Acad. Imp. des Sciences, St. Pe- 

 tersburg. 



SYNTHETIC TYPE OF FOSSIL MAMMALS. 



Professor Leidy lias recently made known the lower jaw 

 of an animal which he justly regarded "as one of the most re- 

 markable fossils which had yet been discovered in our West- 

 ern Territories." It was discovered by Dr. J. Van A. Carter, 

 in an early tertiary, probably eocene bed near Fort Bridger. 

 The jaw, as indicated by the teeth, belonged to an old indi- 

 vidual, about the size of the larger peccary. The peculiarity 

 of the animal consisted in the combination of true rodent-like 

 incisors and molars like those of pachyderms, such as the 

 rhinoceros, tapir, etc. This union is as remarkable as unex- 

 pected, although to some extent paralleled among the lemu- 

 roid primates by the aye-aye (Daubentonia or Cheiromys). 

 The name Trogosns castoridens, meaning the beaver-toothed 

 gnawing-hog, has been proposed for it. 2 Z>, 1871,114. 



COPE OX BATHMODON AND PTERODACTYLS. 



At the meeting of the American Philosophical Society on 

 the 16th of February last, Professor Cope read a paper on 

 Bathmodon, a new genus of extinct hoofed animals, with the 

 teeth having the character both of ruminants and pachyderms. 

 The size was equal to that of the rhinoceros. A second ani- 

 mal was also described as the Boxophodon semicinctus, quite 

 similar in its general characters, and about as large as a 

 tapir. 



At the meeting on the 1st of March Professor Cope de- 



