372 DR. J. E. GRAY ON THE GENERA AND SPECIES [Apr. 11, 
D. novemcinctus, Linn. 8. N. i. 54. 
D. niger, Mlliger. 
D. peba, Desm. 
D. longicaudus, P. M. Abbild. t. 83? 
T. afinis, Lund. 
D. peba, Desm. Mamm. 368; Owen, P. Z. 8. 1831, p.141; Krauss, 
Arch. fiir Naturg. 1862, p. 20, t. 3. f. (skull). 
Praopus 7-cinctus, Burmeister, La Plata, 428. 
Tatusia peba, Owen, Odont. t. 82. f. 2. 
D. tatusia peba, Lesson; Rapp, Edent. 8. 
Praopus longicaudatus, Burm. Thier. Bras. 298, 1854 ; Abhandl. 
Nat. Ges. zu Halle, 1861, p. 147. 
Tatou noir, Azara; Cuvier, Oss. Foss. v. t. 10 (skeleton). 
Cachicame, Buffon, H. N. x. 215, t. 57; Cuv. Oss. Foss. v. 124, 
t. 10 (shield). 
? Tatouele, Buffon, H. N. x. 212. : 
Hab. Central and South America: Texas (Baird); Guiana 
(Krauss) ; Brazil (Pr. Maz.) ; Paraguay (Azara). 
«Texan Armadillo. The people of Matamoras esteem its flesh, 
and the women attribute imaginary properties to its shell. Living 
on the kitchen refuse. Nocturnal; burying flesh and vegetable 
substances for food.” —Baird. 
The head of the animal and the skulls in the Museum collection 
seem to increase in width, compared to the length, as the animal 
increases in age. The width of the head and skull does not depend 
on the sex; for we have broad-headed and narrow-headed males in 
the collection. The sides of the stuffed specimens are pale whitish, 
with black backs. The specimens vary in the size of the scapular 
disk. In one male in the Museum it appears much smaller than in 
most of the other specimens; but they all vary more or less in this 
character. The tail varies considerably in length, compared with 
the length of the body ; but the shortest is as long as the body. 
See also Tatou verdadeiro, Cuv. Oss. Foss. v. 118; Turner, P. Z. 8S. 
1851, p. 213. 
Dasypus uroceras, Lund, Dansk. Vedensk. Natur. Afh. viii. 65, 
225; Rapp, Edent. 8. 
Hab. Brazil (M. de St.-Hilaire). 
Tail terminated by a horny sheath of one piece, the bands broader ; 
plates of pelvic shield larger. 
There is no specimen agreeing with the above description. May 
not the peculiarity of the tail be an accidental malformation ? 
Dr. Burmeister gives Tatu verdadeiro as one of the common Bra- 
zilian names of the species ; and he gives D. uroceras as a synonym * 
of his D. (Praopus) longicaudatus. 
* Dr. Peters, in the ‘ Monatsbericht’ for 1864, p. 179, very shortly indicates, 
but gives no diagnostic characters nor descriptions of, Dasypus pentadactylus, D. 
fenestratus, and D. novemeinctus, var. mexicanus. The latter is probably the 
animal described by Dr. Spencer Baird. It is to be regretted that every zoolo- 
gist who wishes to name a species does not append to it a diagnosis: in this re- 
spect the Scandinavian zoologists of Sweden and Denmark set a good example. 
