Notes on the Naked-tailed Armadillos. 7 



borders. These bristles, the longest of which are less than 10 nun. in 

 length, are more readily detected by touch than by sight. 



Tail considerably more than half as long as body armature, the scales 

 arranged in about 14 rows; longest scales (near base of tail) roundish, 

 about 3 mm. in diameter; most of the scales on dorsal surface, with one 

 (never more) bristle springing from posterior edge. 



Skin of belly with transverse rows of poorly developed scales, the rows 

 about 7 mm. apart; each scale with a tuft of 3-5 appressed bristles; the 

 largest of the scales slightly smaller and less definite in form than those 

 of T. hispidu, the smaller reduced to mere elevations in the skin, sur- 

 mounted by the tuft of bristles. Outer side of feet and legs covered with 

 scales, the largest of which are not more than 5 mm. by 7 mm. in diam- 

 eter. 



Skull triangular in profile, the facial line distinctly broken by the 

 prominent supraorbital swellings. Rostrum noticeably more slender than 

 in T. Jiispida ; zygomata much more lightly built than in T. luspida, bent 

 outward so as form almost an angle at middle. Palate behind tooth row 

 narrower than in T. hlspida and abruptly raised to a slightly higher plane. 

 Hamulars thickened and strongly bent inward at tips. 



Tatoua (Ziphila) centralis Miller. 



1899. Tatoua {Ziphila) centralis Miller, Proc. Biol. Soc. Washington, 

 XIII, p. 4. 



Crown shields about 38 (37-39), otherwise as in T. luguhris. Each cheek 

 with less than a dozen small, irregularly scattered scales. Ears as in T. 

 luguhris, except that scales along border of conch are less conspicuous 

 and secondary row on back of ear is lacking. 



General character of plates of body armature as in Z. luguhris. Scapular 

 shield consisting of seven or eight rows, the longest of which contains 

 about 28 plates. Neck shields as in 1\ luguhris. Dorsal rings 10, the 

 longest containing 29-31 plates. Pelvic shield as in 2\ luguhris. Bristles, 

 tail, and scales on belly and legs as in 2'. luguhris. 



Skull slightly larger than in T. luguhris; rostrum distinctly longer. 

 Hamulars neither thickened nor bent inward at tip. Zygomata much 

 less strongly bent outward than in T. luguhris, so that, when view^ed from 

 above, they are nearly parallel. 



