﻿192 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 102 



Discussion. — Although the teeth in this specimen are broken and 

 badly worn, the characters presented, especially the size, are distinct 

 enough for the species to be easily recognized. 



MEASUREMENTS OF TEETH OF CYNODONTOMYS LUNDELIUSI (IN MILLIMETERS) 



Length 



Pa-Ms 30. 7 



P4-M, 22. 3 



Ml (estimated) 5.0 



M, 5.5 



Ms 6.5 



Depth of jaw at Mi 12, 8 



Depth of jaw at M:, 13. 7 



Order TILLODONTIA 



Family TILLOTHERIIDAE 



Genus ESTHONYX Cope 



ESTHONYX ACUTIDENS Cope 



U.S.N.M. No. 18267, fragment of right mandible with I2-3 and P3-M2 

 (loc. No. 48FR78) ; U.S.N.M. No. 18470, fragments of both mandibles 

 (loc. No. 48FR65) ; U.S.N.M. No. 18469, skull and jaw fragments 

 (loc.No.48FR80). 



This material is being studied by Dr. C. L. Gazin and will be dis- 

 cussed in his revision of the order. 



Order PRIMATES 



Family ADAPIDAE 

 Genus NOTHARCTUS Leidy 



NOTHARCTUS VENTICOLUS Osborn 



U.S.N.M. No. 18437, left mandible with Mi-3, roots of P3-4, and 

 alveoli of P1-2 (loc. No. 48FR77). 

 This specimen does not add anything to our knowledge of the species. 



Family APATEMYIDAE 



Genus TEILHARDELLA Jepson 



TEILHARDELLA sp. 



U.S.N.M. No. 18438, right mandible with only the incisor (loc. No. 

 48FR80) . 



This specimen is provisionally referred to this genus on the charac- 

 ters of the mandible, which exhibit a number of differences from the 

 genotype, but these differences cannot be properly appraised until the 

 dentition is known. The characters exhibited by this specimen are : 



