370 DR. J. E. GRAY ON THE GENERA AND Species [Apr. 11, 
Zool. t.7 (scales bad); Bennett, P. Z. S.1834, p. 81; Turner, P. Z. 8S. 
1851, p. 219; Gerrard, Cat. Bones B. M. 285 ; Sundevall, /. c. 260, 
t. 4. f. 2 (young skull and toe-bones) ; Peters, Reise n. Mossamb. i. 
174, t. 32. f. 8 (os hyoides) ; Rapp, Edent. 17; Rupp. Mus. Senck. 
ili. 179. 
Hab, Eastern Africa, Sennaar, Caffraria, Kordofan (Hedenéorg), 
Latakoo (Steedman). 
Sundevall figures the skull of a very young specimen of this species. 
It is short, ventricose ; the face broad, short, not half the length of 
the brain-case ; the nasal bones are short, broad, wide behind ; the 
lower jaw simple, without any process in the front of the upper edge 
(see Vet. Akad. Hand. 1842, t.4. f. 34). 
Fam. 2. DasyrpopiIp. 
Body covered with a bony convolute armour, formed of imbedded 
tesseree. 
Dasypus, Linn., Cuvier. 
Dasipina, Gray, Mamm. B. M. 189. 
Dasypodide, Turner, P. Z. 8. 1851, p. 211. 
Fodientia, Mlliger, Burmeister, Thiere Bras. 208 ; Giebel, Saugeth. 
ANT. 
Loricata, Vicq d’ Az. 
Osteology (see Cuv. Oss. Foss.; Turner, P. Z. S. 1851, p. 211). 
Cuvier (Oss. Foss. v. 117. 1) divides the Armadillos into three 
groups according to the number of the toes ;— 
I. Hind feet with four toes, the two central equal: Dasypus novem- 
cinctus, Linn. = Tatusia, D. tricinctus, Linn. = Tolypeutes. 
II. The hind feet with five claws, one of the middle ones larger: D. 
sexcinctus = Dasypus, Tatou pichey and Tatou velu = Eu- 
phractus. 
III. The hind feet with five claws, the three outer ones very large : 
D. unicinctus= Xenurus ; Tatou géunt=Prionodos. 
Cuvier observes, ‘The Armadillos with four toes have a short 
penis with a large three-lobed gland, and those with five toes a very 
long penis.” The Apar (D. tricinctus), which is arranged with those 
having four claws, has five claws, and has a penis like those of that 
division. 
These animals walk in three different manners, each having a par- 
ticular conformation of the foot for the purpose. 
The Tatusie@ are digitigrade. 
The Dasypodes are plantigrade. 
The Tolypeute walk on the tips of the front claws, and may be 
called unguligrade. 
The differences in the form of the bones of the feet are described 
and figured in Cuvier’s ‘ Oss. Foss.,’ but he does not appear to have 
been aware of the differences in the habit and mode of walking. 
