16 



ARKIV FÖR ZOOLOGI. BAND 14. N:0 20. 



length and not quite 2 cm. in breadth at the broadest place, 

 wbich is in the posterior half. The dry skin is somewhat 

 thicker at this naked spöt than in its surroundings. The 

 surface is smootb and tbere are only a few short hairs ori- 

 ginating behind the usual epidermoid scales. There is no 

 cicatrice, or any other indication of a healed wound, nor is 

 there anything else that points to any pathological condition 

 and against this speaks also the symmetrical and well defined 

 shape of this spöt. On the other hand, however, there are 

 no pores, nor any other indications to that it should be a 

 glandular area, which might be guessed at. Before anything 

 can be decided concerning this an examination of more and 

 preferably fresh material is needed, but it seemed of in- 

 terest do draw the attention to this strange-looking spöt, so 

 that it might be made out, whether it is only accidental in 

 this specimen, or of normal occurrence. 



Finally the following cranial measurements are recorded 

 for comparison with such of two Peruvian specimens. 



I Greatest length of skull 



Condylobasal length 



Basal length '^ 



Greatest breadth across orbital rings . • 



Least interorbital breadth 



Breadth of brain-case 



Length of nasals mesially 



Greatest combined breadth of nasals . . 



Palatal length 



Greatest breadth across outside of m^ . , | 

 Distance from anterior premolar to tip of 



premaxillary i 



Distance from orbit to tip of premaxillary j 

 Distance from for. lacrymale to hind sur- j 



face of occipital condyle 



Length of upper molar series 



Lengt of lower molar series 



m'^ — m* . 



Greatest breadth nf ni- 



