250 KODENTIA.. 



43246 a. Greater portion of the cranium ; from the Pleistocene of 

 Buenos Ayres. Bravard Collection. Purchased, 1854. 



43246 b. Numerous limb-bones and vertebrae ; from the Pleistocene 

 of Buenos Ayres. Bravard Collection. Purchased, 1854. 



43246 C. The nearly complete hind foot ; from the Pleistocene of 

 Buenos Ayres. Bravard Collection. Purchased, 1854. 



Family DASYPROCTID^l. 



Dentition : I. J, C. 5, Pm. \, M. |. 



Genus DASYPROCTA, Illiger l . 

 Syn. CMoromys, Cuvier (non Meyer). 



The existing species resemble one another so closely in dental and 

 cranial characters that it seems impossible to apply specific names to 

 fossil forms. 



Dasyprocta, sp. 



Hdb. S. America. 



18869. Occipital portion of the cranium ; from a cavern in Minas 

 Geraes, Brazil. Claussen Collection. Purchased, 1845. 



18871. Premaxillse and incisors ; from a cavern in Minas Geraes. 

 Claussen Collection. Purchased, 1845. 



18894. Two specimens of the palate, and three rami of the man- 

 dible ; from a cavern in Minas Geraes. 



Claussen Collection. Purchased, 1845. 



18894 a. The tarsus ; from a cavern in Minas Geraes. 



Claussen Collection. Purchased, 1845. 



Genus CCELOGENYS, F. Cuvier 2 . 

 <log;em)$ paca (Linn. 3 ). 



Syn. Mus paca, Linn. 4 

 Hdb. S. America. 

 18690. The cranium of a female, imperfect posteriorly; from a 



1 Prod. Syst. Mam. et Avium, p. 93 (1811). 



2 Ann. d. Mus6um, yol. x. p. 203 (1807), Calogenus. 



8 Syst. Nat. ed. 12, vol. i. p. 81 (1766), Mus. * Loc. cit. 



