380 DR. J. E. GRAY ON THE GENERA AND Species [Apr. 11, 
the head; regularly arched. Nape with three bony plates in front 
of the scapular shield. Front claws five; the inner and outer ones 
small; the middle one moderately large. 
Dasypus tricinctus, Linn. 8. N. 1.53; Schreb. Saugeth. 215, 
t. 71. 
D. apar, Desm. Mamm. 367, t. 26. f. 3. 
Tatusia apar, Lesson, Man. 310. 
T. tricincta, Gray, Cat. Mamm. B. M. 181; Gerrard, Cat. Bones 
B. M. 286. 
Tolypeutes tricinctus, Turner, P. Z. 8. 1851, p. 215. 
Dasypus (Tatusia) tricinctus, Rapp, Edent. 9. 
Apar, Buffon, H. N. x. 206. 
Hab. Bolivia; Buenos Ayres. 
Skull of Tolypeutes tricinctus. 
** Toes 4/5. Tail conical; base broadly expanded ; end conical, 
rather compressed ; under surface convex. Frontal shield nar- 
row, produced above the head, and truncated behind. Nape 
without any plates. Tolypeutes. 
2. ToLyPEUTES CoNURUS. Mataco. B.M. 
Frontal shield flat, narrow, produced behind the head into a kind 
of hood, and truncated on the hinder edge. Nape without any tes- 
seree. Front claws four, the outer one small, the middle one very 
large and strong. 
Dasypus (Tolypeutes) conurus, Is. Geoff. Compt. Rend. 1847 ; 
Rev. Zool. 1847, p. 135; Burmeister, d. La Plata, ii. 427 ; Giebel, 
Zeitschrift, 1861, p. 93, t. (skull). 
Mataco, Azara, 11. 161. 
Hab. South America, La Plata (Burmeister). 
