796 
Genus.—Oryctéropus. 
OESO i pol Mee eee 
0—0 0—0 6-6 5—5 
Their form is cylindrical and their crowns flat. 
Limbs.—Fore-feet with four toes, hind with five. 
very powerful adapted for digging. 
Tail moderate and covered with hair. 
Teeth.—I. when aged. 
Claws 
Genus.—Myrmecéphaga. 
Fore-feet with four toes, hind with five. 
Habitat.—South America. 
Genus. —Tamandua. 
Distinguished from Myrmecéphaga by the shorter head 
and plumeless tail. 
Genus.—Cy clothiirus. 
Fore-feet with two toes, hind with four. Nose not so long 
as in preceding genus. Ribs very broad and flat, overlapping 
each other. 
Habitat.—South America, 
Sub-family.—Ornithorhyncina. 
Teeth horny, or none. Hind-feet in males with hollow 
spur. Feet with five toes, and short. Snout long, and 
covered with naked skin. 
Genus.—Plitypus." 
2-2 
Teeth ay flat and horny, without fangs. Snout flattened 
COMPENDIUM OF GENERIC DISTINCTIONS. 
like duck’s bill. 
covered with soft hair. 
Habitat.—A ustralia. 
Lower jaw shorter and narrower. 
Tail broad and flattened. 
Body 
Genus.—Echidna. 
Teeth none. Snout long, slender, and rather pointed ; and 
very little mouth. Tongue long and extensile. Feet with 
large, curved claws. Tail short. Body covered with spines, 
mixed with hairs, 
Habitat.—Australia. 
Family.—BRADYPIDE. 
Head flat and short. Legs long, and furnished with large, 
curved, compressed claws. 
Genus. —Cholcepus. 
First molar tooth long, and like a canine. Fore-feet with 
two toes. Tail none. 
Habitat.—West Indies. 
Genus. —Braédypus. 
Teeth of adult.—M, °—? 
Pv 
very short. Fore-feet with two or three toes, hind with 
three, joined as far as the claws. Tail none, “or very 
short. 
Habitat.—South America. 
separate and cylindrical. Ears 
