54 Mammalia of Southern Brazil. 
; Gray states, but as long as the head and body, as in the M. sellaia, 
id considerably exceeding that of the J/, bivitatta. 
i8. Xenurus GVMXURUS, Illiger, 1815. 
Three skins, with skeletons, one from Sao Joao, and one from 
Chapada. 
19. Xenurus hispidus Burmeister. 
Twelve individuals, all from Chapada: evidently abundant, and 
constant in its characters. 
20. Dasypus sexcinctus Linn, 
Two skins, five skeletons, and nine skulls, all from Chapada. 
21. Priodontes maximus Kerr. 
One individual complete, and one skull from Chapada. 
22. Tatusia peba Desm. 
Two skins, with skeletons, from Sao Joao ; one skin with skull, 
four'skeletons and nine separate skulls, all from Chapada. 
23. Tatusia megalolepis sp. nov. 
Movable bands, six ; transverse bands or rows on the scapular 
shield, counted near the border, and omitting the large posterior row, 
twelve. Transverse rows on the pelvic shield, counted near the 
border, twelve, without the anterior wide marginal row. Tail consider- 
ably shorter than body, cylindric to the end. No rudimental thumb 
on the forefoot. Ears one-third as long as head. Two short hairs 
issuing from each scute of the movable rings. Hair of inferior sur- 
faces very sparse. 
Measureinents. 
M. 
Length of carapace (axial) 197 
" of shield of head 055 
Length of ear 025 
" of tail 166 
" of third claw of fore foot (fourth) 017 
The large size of the scales distinguishes \.\\^Tattisia megalolepis from 
the T.peba and the T.hybrida2X:i\\ ages. The number of scuta in a mov- 
able band in the former is only 43, while in both the latter the number 
ranges from 57 to 60. It resembles the T. hybrida in the short tail, 
