260 ZOOLOGICAL GEOGRAPHY. [PART III. 
Mammalia.—The only forms of Mammalia peculiar to this 
sub-region are Theropithecus, one of the Cynopithecide confined 
to Abyssinia; Petrodromus and Rhynchocyon, belonging to the 
insectivorous Macroscelididz, have only been found in Mozam- 
bique ; the Antelopine genus Neotragus, from Abyssinia south- 
ward; Saccostomus and Pelomys genera of Muride inhabiting 
Mozambique ; Heterocephalus from Abyssinia, and Heliophobius 
from Mozambique, belonging to the Spalacide; and Pectinator 
from Abyssinia, belonging to the Octodontide. Cynocephalus, 
Rhinoceros, Camelopardalis, and antelopes of the genera Oryz, 
Cervicapra, Kobus, Nanotragus, Cephalophus, Hippotragus, Alce- 
phalus, aud Catoblepas, are characteristic; as well as Felis, 
Hyena, 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 Baleniceps, 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 Calamariide ; 
and Pythonodipsas, one of the Dipsadidee, both from the Zambesi ; 
and among lizards, Pistwrus, one of the Geckotide, 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 Hesperide, 
from Mozambique ; and in Coleoptera, 2 genera of Cicindelide, 
8 of Carabide, 1 or 2 of Cetoniide, 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 
