CnLAMYDOPHORID^E. 387 



of hood, and truncated on the hinder edge. Nape without any tes- 

 serae. Front claws four, the outer one small, the middle one very 

 large and strong. 



Dasj'iDus (Tolypeutes) couurus, 7s. Ocoff. Compt. Mend. 1847 ; Rev. 



Zuol 1847, p. l;3o ; Burmekter, lieise d. La riata-St. ii. p. 427 ; 



Giebel, Zeitsvhrift, 18G1, p. 93, t. (skull). 

 Tolypeutes conurus. Gray, P. Z. S. 18G5, p. 380. 

 Mataco, Azara, ii. p. 161. 



Hah. South America, La Plata (Burmeister). 



The specimen living in the Gardens of the Zoological Society, I 

 have been informed by Mr. Bartlett and Dr. Peters, has only three 

 front claws ; all those in the British Museum have foui', which ap- 

 pears to be the noi-mal number. In other respects the animals are 

 similar. The shell of the living animal is blackish brown. The 

 skin between the central rings is brown, bald, and smooth. The 

 animal sleeps roUed up with its head downwards. 



The skull that Giebel (Zeitschrift, 1S61, t. 234. f. 2) figui-es as 

 that of Dasi/jnfs conurus, I am assured by Dr. Burmeister, belongs to 

 this species ; it is unlike the skull of Tolypeutes tricinctus in not 

 having any tubercles over the orbits ; I was doubtful, as one of the 

 skulls figured on these plates is wrongly determined, the one named 

 D. viUostis being D. sexclnctits. 



[Fam. GLYPTODONTID^. 



Dorsal shield entire, not revolute, immoveably affixed to the upper 

 part of the very large pelvis. 



Genera: — 1. Gh/pfodon, Owen; 2. Panochthus, Burm. ; 3. Ho- 

 plophorus, Lund (Schistopleurum, Nodot.). 



Dr. Burmeister thinks there is a ventral shield ; but in the figure 

 it is only " hyp)otheticalhi indicated ; " and he calls the group Bilori- 

 cata (Burm. Ann. & Mag. N. H. 1864; Anales del Museo Publico 

 de Buenos Aires, iii. 1866, p. 183, t. 6). The head is probably con- 

 tractile under the dorsal shield.] 



Fam. 5. CHLAMYDOPHORIDiE. 



The dorsal disk divided into two parts behind, forming an elon- 

 gated dorsal and short pelvic shield ; the latter is attached to the 

 bones of the pelvis. 



Chlamydophorina, Gray, P. Z. S. 1865, p. 381. 



