166 Mr. 0. Thomas ou 



The new forms may be more fully described as follows : — 



Dasypus sexcinctus holivke^ subsp. n. 



Size rather less than in cjilvi'pes. Colour pale ; hairs of 

 carapace white, of soft parts brown, nowhere really black. 

 Hairs not more numerous than in gilvipes, the scales of the 

 movable bands each with a couple of white bristles about 

 2-4 cm. long at their posterior end; pelvic shield almost 

 naked, its few bristles rarely more than 1 cm. in leiigth. 

 Scales more numerous than in the Eastern forms, the median 

 movable bands consisting of 36 scales. Frontal shield very 

 broad in proportion to its length. 



Skull broad and stout, with broadly and abruptly expanded 

 zygomata. Frontal region but little convex. Nasals nearly 

 parallel-sided, not of the peculiar sha])e found in tucumanus. 

 Palate broader. Molars more broadly rounded, the fifth 

 maxillary tooth 6'4x4-7 mm. 



Dimensions of the type (measured on the flattened skin) : — 



Head and body 500 mm. ; tail 250. 



Frontal shield 114x89. 



Skull: condylo-nasal length 119; basal length 100*5; 

 zygomatic breadth 75 ; nasals, length 43'3, breadth ante- 

 riorly 13, mesially 18*3, posteriorly 20; palatal length Q^ -, 

 breadth of palate between fifth maxillary teeth 16'4. 



Hah. Near Santa Cruz de la Sierra, Bolivia. 



Type. Old male. Original number 139. Collected 

 17th May, 1906, by Mr. J. Steinbach ; presented by Oldfield 

 Thomas. One specimen. 



The pale colour and more numerous scales ally this form 

 lo the next subspecies, while it resembles D, s. gilvipes in 

 its scantily haired pelvic shield. Its very broad and rather 

 flattened skull is peculiar to itself. 



Dasypus sexcinctus tucumanus, subsp. n. 



Size rather less than in the large Paraguayan D. s. gilvipes. 

 Colour paler, the carapace itself sandy, its hairs white. 

 These latter are fairly numerous both on the movable bands 

 and on the jjelvic shield, and attain from 3-5 cm. in length 

 along the sides. Scattered hairs of underparts^ arms, and 

 legs mostly black, with a few whitish ones intermingled. 

 Scales of carapace rather smaller than in the Eastern forms, 

 there being 33-36 scales on each of the movable bands, the 

 numbers on the shoulder and pelvic shields proportionally 

 increased. 



Nasals narrow in front and behind, angularly broad in the 



