xii 
INTRODUCTION. 
IV. AUTOCHTHONOUS SPECIES. 
Having now eliminated the Nearctic and Neotropical elements from the Central- 
American Mammal-fauna, the remainder (neglecting the four introduced Mures) we 
shall find to comprehend the indigenous or autochthonous species, as they have been 
appropriately termed—that is, those that are confined to Central America, or, as it is 
much safer to say in all such cases, are not yet known to occur elsewhere. These are 
47 in number, as enumerated in the subjoined Table. 
Taste VII.—-Species peculiar to Central America, or not yet ascertained to occur 
. Mycetes palliatus. 
villosus. 
. Ateles vellerosus. 
. Nyctipithecus rufipes. 
. Chrysothrix cerstedi. 
. Vesperugo propinquus. 
albigularis. 
om Ss 
parvulus. 
. Saccopteryx plicata. 
10. Macrotus bocourtianus. 
11. Ischnoglossa nivalis. 
12. Cheeronycteris mexicana. 
Ne) 
13. Centurio senex. 
14. 
macmurtrii. 
15. Sorex vere-pacis. 
16. 
euotis. 
These 47 autochthonous species belong to the following 
17. 
18. 
19. 
20. 
21. 
22. 
23. 
24, 
25, 
26. 
27. 
28. 
29. 
30. 
3l. 
elsewhere. 
Blarina micrura. 32. 
berlandieri. 33. 
mexicana. 34, | 
Bassaricyon gabbi. a 
Bassaris sumichrasti. 36. 
Mephitis macrura. 37. 
38. 
Tapirus bairdi. 39. 
dowi. 40. 
Cariacus toltecus. 41. 
—___ 42. 
Sciurus griseoflavus. 43, 
hypopyrrhus. 44. 
Spermophilus annulatus. 45. 
Hesperomys teguina. 46. 
mexicanus, 
melanophrys. 47. 
six 
nomenclature adopted in the present work :— 
I. Primates 
II. Chiroptera . 
III. Insectivora . 
IV. Carnivora 
Let us now examine the composition of each of these 
study of them must necessarily be of much import on the 
Hesperomys sumichrasti. 
couesi. 
nudicaudus. 
Neotoma ferruginea. 
Arvicola mexicanus. 
quasiater. 
Geomys mexicanus. 
hispidus, 
Perognathus hispidus. 
Heteromys desmarestianus. 
Synetheres mexicanus. 
Dasyprocta isthmica. 
punctata. 
mexicana. 
Lepus graysoni. 
Bradypus castaneiceps. 
orders, according to the 
5 V. Ungulata. .. . . 8 
. &9 VI. Glires . » . 21 
5 VII. Edentata. . . . J] 
. 8 
Central-American Mammal-fauna. 
categories separately, as the 
question of the origin of the 
