102 EDENTATA. 



Scelidotherium tarijense, H. Gervais and Ameghino 1 . 



The symphysis and that portion of the mandible in advance of the 

 teeth is very short and the superior border much bent upwards, 

 so that nearly the whole of it is above the level of the dental alveoli ; 

 the descending process of the zygoma is not digitated, and the nasals 

 appear to have been of considerable length. 



Hob. South America (Bolivia and Brazil). 



18649 a. The nearly complete left ramus of a mandible, probably 

 belonging to a female of this species ; from a cavern in 

 Minas Geraes, Brazil. This specimen, in which all the 

 teeth are wanting, agrees very closely in contour with 

 the mandible of the type male skull from Bolivia, figured 

 by P. Gervais (without specific name) in the ' Mammiferes 

 Fossiles de 1'Amerique Meridionale ' (Castelnau's Voyage), 

 pi. xi. fig. 2, but is of more slender type. In addition to 

 the difference in the structure of the symphysis, it differs 

 from the mandible of S. chilimse (No. M. 2821) by the 

 form of the dental alveoli. Noticed by the present writer 

 in the ' Proc. Zool. Soc.' 1886, p. 496, note 2. 



Claussen Collection. Purchased, 1845. 



18933. A right femur, which may not improbably belong to the 

 present species; from a cavern in Minas Geraes. This 

 bone is longer and narrower than 'the femur of S. lepto- 

 cephalum ; its extreme length being 0,430, and its distal 

 width 0,185. Claussen Collection. Purchased, 1845. 



SPECIFICALLY UNDETERMINED SPECIMENS. 



Unless otherwise stated, these specimens are from the caverns of Minas 

 Geraes, Brazil, and belong to the Claussen Collection. Pur- 

 chased, 1845. 



M. 3600. Part of the cranium and left ramus of the mandible of a 

 young individual ; from the Pleistocene of Buenos Ayres, 

 Argentine Republic. The lower teeth are much wider at 

 the base than at the summit. 



Bravard Collection. Purchased, 1854. 



M. 3603. Fragment of the right maxilla with the last three teeth, 

 apparently belonging to a young individual ; from the Pleis- 

 tocene of the La Plata, Argentine Republic. The teeth 



1 ' Mammiferes Fossiles de 1'Amdrique Meridionale,' p. 148 (1880). 



