254 KODENTIA. 



Genus DOLICHOTIS, Desmarest l . 

 Syn. Cerodon, Cuvier. 

 The last upper molar with three lobes. 



Dolichotis, sp. 1. 



Dolichotis minor, H. Gervais and Ameghino 2 . 

 Hob. S. America. 



40675 C. Palatal portion of the cranium, containing all the cheek- 

 teeth ; from the Pleistocene of Buenos Ayres. This 

 species is considerably smaller than the existing D. pata- 

 chonica, and may perhaps belong to D. minor, H. Gervais 

 and Ameghino, with which it agrees in the strongly de- 

 veloped third lobe of the last upper molar. The length 

 of the space occupied by the series of cheek-teeth is 0,0207. 

 Bravard Collection. Purchased, 1854. 



Dolichotis, sp. 2. 

 Hob. S. America. 



40675 d. The right ramus of the mandible of a species somewhat 

 larger than the last; from the Pleistocene of Buenos 

 Ayres. The length of the space occupied by the series of 

 cheek-teeth is 0,0225. 



Bravard Collection. Purchased, 1854. 



40675 e, f. Detached teeth and limb-bones, which may belong to 

 one or other of the foregoing species ; from the Pleistocene 

 of Buenos Ayres. Bravard Collection. Purchased, 1 854. 



Genus HYDROCHCERUS, Erxl. 3 (ex Brisson). 



f^gfcrodjaras capjjuara, Erxl. 4 

 Syn. (P) Bydrochcerus affinis capybara, Lund. 



Hob. S. America. 



18925. Portion of an incisor; from a cavern in Minas Geraes, 



Brazil. This specimen agrees exactly in size with the 



incisor of the living form, with which the so-called H. 



ajfinis capybara 5 , Lund, may in all probability be united. 



Claussen Collection. Purchased, 1845. 



1 Mammalogie, p. 360 (1822). 



2 Mammiferes fossiles de I'Amerique du Sud, p. 47 (1880). 



3 Syst. Eegn. Animal, p. 191 (1777). Op. cit. p. 193. 



Vide H Gervais and Ameghino, ' Mammiferes fossiles de I'Amerique du 

 Sud,' p. 43 (1880). 



