CAXIS PAEVIDEXS. 79 



This animal appears to stand somewhat lower on its limbs than does 

 C. azaroR. 



Habitat. Brazil. 



Centimeters. 



Length from snout to root of tail GO-0 



„ of tail 27-5 



„ from bed to end of longest digit ITO 



„ of car 48 



Cranial and Dental Characters. 



The sagittal ridge may be very strongly marked posteriorly or be 

 obsolete. There is generally a raised flattened tract in front of it, the 

 lateral margins of which have a somewhat lyratc outline. 



The relative length of the postorbital processes varies in different 

 individuals, as also does their curvature. 



The dentition is remarkable for the very small size of the fourth upper 

 premolar compared with the combined lengths of the first two upper 

 molars, its proportional length to theirs being, on an average, as 100 to 

 100, three specimens being examined. 



Centimeters. 



Easion to ovaliou 2'0 



„ sphenoideum 3"0 



Splicnoidoum to gnatliion 6'3 



Length of palate 'i'S 



Breadth „ 2-8 



Length of nasals 3'1 



Breadth of „ 0-9 



.„ brain-case 4'0 



„ zygomata 6'3 



Length of '^ 0-3 



„ ^ 0-5 



„ 1^3 0-55 



P-4 0-7 



0-7 



^ 0-5 



>> — 

 M. 1 



