24 CARNIVOKA. 



This species has been identified by Filhol, in the Ann. Soc. Sci. 

 Phys. Nat. Toulouse, 1882, p. 12, with Hycenodon requieni. The 

 name H. brachyrkynchus apparently has the priority 1 . This species 

 is of considerably smaller size than the last, and is readily distin- 

 guished by the crown of the second lower premolar being extremely 

 tall and narrow. The last upper premolar has no distinct anterior 

 talon, and the crown of the second upper premolar is very tall and 

 narrow ; the first premolar is small. 



Hob. France. 



M. 1668. Anterior portion of the cranium and mandible of an 

 immature individual; from the Upper Eocene of Bach, 

 near Lalbenque (Lot), France. This specimen is very 

 important and valuable, as it shows the cranium and 

 mandible in association, which is a comparatively rare 

 condition. It exhibits the upper incisors, the upper and 

 lower canines, most of the upper premolars, m. 3, and the 

 second and third lower premolars the latter not fully 

 protruded. In the long and narrow pmJJ, and the absence 

 of a distinct anterior talon to pm. 4, this specimen agrees 

 with the cranium figured by Filhol in the Ann. Soc. Sci. 

 Phys. Nat. Toulouse, 1882, pi. i. It also agrees precisely 

 in every detail of shape and size with a more perfect 

 cranium figured by the same writer in a memoir not yet 

 published. The specimen shows that pm. 2 was a tall 

 narrow tooth, very different from that of H. heberti 

 (No. 26749). The interval between the canine and 

 mTT is 0,041, as compared with 0,051 in H. heberti 

 (No. 28203). Purchased, 1884. 



M. 1351. Fragment of the middle portion of the cranium, com- 

 prising part of the palate, the frontals, and nasals, and 

 showing the last three premolars and the two true molars ; 

 from the Upper Eocene of Caylux, France. This spe- 

 cimen belonged to an immature individual ; but, except in 

 being slightly smaller, it agrees precisely with the cranium 

 figured by Filhol in the Ann. Soc. Sci. Phys. Nat. Toulouse, 

 1882, pi. i. There is no anterior talon to pm. 4. 



Purchased, 1884. 



M. 1363. Fragment of the right maxilla, containing the last two 



molars ; from the Upper Eocene of Caylux. This spe- 



1 In the notice by Filhol, already cited, the impression is given that the 



specific name brachyrhynchus was applied in the original notice by Dujardin 



(Comptes Rendus, vol. x. p. 134 [1840]) ; but this is not really the case. 



