250 RODENTIA. 
43246 a. Greater portion of the cranium; from the Pleistocene of 
Buenos Ayres. Bravard Collection. Purchased, 1854. 
43246 b. Numerous limb-bones and vertebre; 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 DASYPROCTIDA. 
Dentition :—I. i C. Pm. 4, M. -. 
Genus DASYPROCTA, [lliger '. 
Syn. Chloromys, 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. 
Hab. 8. America. 
18869. Occipital portion of the cranium ; from a cavern in Minas 
Geraes, Brazil. Olaussen Collection. Purchased, 1845. 
18871. Premaxille 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. Ny 
Claussen Collection. Purchased, 1845. 
18894 a. The tarsus; from a cavern in Minas Geraes. 
Claussen Collection. Purchased, 1845. 
Genus CCBLOGENTYS, IF. Cuvier’. 
Coelogenys paca (Linn.’). 
Syn. Mus paca, Linn.* 
Hab. §. America. 
18690. The cranium of a female, imperfect posteriorly; from a 
1 Prod. Syst. Mam. et Avium, p. 93 (1811). 
* Ann. d. Muséum, vol. x. p. 203 (1807), Celogenus. | 
8 Syst. Nat. ed. 12, vol. i. p. 81 (1766), Mus. 4 Loe. cit. 
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