GLYPTATELUS 207 



Glyptatelus malaspinensis Ameghino 



G. malaspinensis Amegh., 1902, Bol. Acad. Xac. Cienc, Cordoba, t. 17, p. 50. 



This species is described (no figure) as about the same 

 size as the preceding, but with subordinate figures in the 

 central O-figure, and also outside of it. A dorsal plate 

 measures 26 mm. long by 20 mm. wide. 



GRAVIGRADA 



Remains of this suborder are almost as rare as those of 

 the glyptodonts, and apparently for the same reason, 

 unfavorable habitat. We found no remains of this group, 

 but Ameghino has described a skull and some teeth as 

 belonging to this group; so, in order to present a complete 

 view of the Deseado fauna, I give a digest of his descrip- 

 tions. 



Hapalops antistis Ameghino 



H. antistis Amegh., 1897, Bol. Inst. Geog. Argen., t. 18, p. 505. 



The species is based on a skull, not figured, of which 

 Ameghino says: the size is small, the molars are compressed 

 from front to back, and gives the following measurements: 



Length of cranium from front of max. to occ. condyles 140 mm. 



Length of four post, molars • 27 mm. 



Distance from front of max. to back of last molar 48 mm. 



Octodontotherium Ameghino 



Octodontotherium Amegh., 1895, Bol. Inst. Geog. Argen., t. 15, p. 656. 



The genus is based on isolated teeth, each a mass of 

 dentine surrounded by a thin layer of cement. The an- 

 terior tooth of the upper jaw is caniniform, the first molar 

 ovoid in section, the last molar is bilobed, corresponding 

 to Pseudolestodon. The first tooth of the lower jaw is also 

 caniniform, but is two-faced as a result of wear. The 

 intermediate upper and lower molars are rectangular 

 prisms resembling those of Chlamdothcrium. 



