DASYPROCTID #.—CAVIID A. 251 
cavern in Minas Geraes, Brazil. This specimen is of the 
size of the skull.of a full-sized living Paca, with which it 
agrees in every respect. It probably corresponds to the 
so-called C. major of Lund, with which C. laticeps, Lund, 
hould probably be united. 
Claussen Collection. Purchased, 1845. 
18868. Five rami of the mandible; from acavern in Minas Geraes. 
Claussen Collection. Purchased, 1845. 
17572, 17590. Two specimens of the humerus; from a cavern in 
Minas Geraes. Claussen Collection. Purchased, 1845. 
17579. The left ulna; from a cavern in Minas Geraes. 
Claussen Collection, Purchased, 1845 
17577-8. Two specimens of the left femur; from a cavern in 
Minas Geraes. Claussen Collection. Purchased, 1845. 
17574. Two specimens of the left tibia; from a cavern in Minas 
_ Geraes. Claussen Collection. Purchased, 1845. 
Family CAVIID A. 
Dentition :—I. i C. 2, Pm. ;, M. - 
Genus CAVIA, Pallas ' (ex Klein). 
Cabia porcellus (Linn.’). 
Syn. Mus porcellus, Linn.? 
(?) Cavia aperea, Gmelin. 
? Cavia aperoides, Lund. 
Hab. 8. America. 
18898. The distal portion of the left ramus of the mandible, con- 
taining the incisor and the first two cheek-teeth; from 
a cavern in Minas Geraes, Brazil. This specimen is indi- 
stinguishable from the mandible of the existing Guinea- 
pig. _ Claussen Collection. Purchased, 1845. 
Genus MICROCAVIA, H. Gervais and Ameghino‘, 
Microcavia, sp. 
Hab. 8. America. 
18898 a. Six rami of the mandible; from the caverns of Minas 
* Miscell. Zool. fase. ii. p. 16 (1767). 
> Syst. Nat. ed. 12, vol..i. p. 79 (1766), Mus. 3 Loe. cit, 
* Mammiferes fossiles de Amérique du Sud, p. 51 (1880). 
