260 
ZOOLOGICAL GEOGRAPHY. 
[part III. 
Mammalia . — The only forms of Mammalia peculiar to this 
sub-region are Theropithecus, one of the Cynopitliecidse confined 
to Abyssinia ; Petrodromus and Rhynchocyon, belonging to the 
insectivorous Macroscelidid®, have only been found in Mozam- 
bique ; the Antelopine genus Neotragus , from Abyssinia south- 
ward; Saccostomus and Pelomys genera of Murid® inhabiting 
Mozambique ; Heterocephalus from Abyssinia, and Heliophobius 
from Mozambique, belonging to the Spa! acid* ; and Peetinator 
from Abyssinia, belonging to the Octodontidse. Cynocephatus, 
Rhinoceros, Camelopardalis, and antelopes of the genera Oryx, 
Cervicapra, Kobus, Nanotragus, Cephalophus, Hippotragus, Alee - 
phalus, and Catoblepas, are characteristic; as well as Felis, 
Hyaena, and numerous civets and ichneumons. 
Birds. — Peculiar forms of birds are hardly to be found here ; 
we only meet with two — Hypocolius, a genus of shrikes in Abys- 
sinia; and Balceniceps, the great boat-billed heron of the Upper 
Nile. Yet throughout the country birds are abundant, and most 
of the typical Ethiopian forms are well represented. 
Reptiles. — Of reptiles, the only peculiar forms recorded are 
Xenocalamus, a genus of snakes, belonging to the Gala man id* ; 
and Pythonodipsas, one of the Dipsadid®, both from the Zambesi ; 
and among lizards, Pisturus, one of the Geckotid®, from Abys- 
sinia. 
Amphibia and Fishes. — There are no peculiar forms of amphibia 
or of fresh-water fishes. 
Insects. — Insects are almost equally unproductive of peculiar 
forms. Among butterflies we have Abantis , one of the Hesperid®, 
from Mozambique ; and in Coleoptera, 2 genera of Cicindelid®, 
8 of Carabid®, 1 or 2 of Cetoniid®, and about half-a-dozen of 
Longicorns : a mere nothing, as we shall see, compared with the 
hosts of peculiar genera that characterise each of the other sub- 
regions. Neither do land-shells appear to present any peculiar 
forms. 
The fact that so very few special types characterise the exten- 
sive area now under consideration is very noteworthy. It justifies 
us in uniting this large and widespread tract of country as 
forming essentially but one sub-division of the great Ethiopian 
