E. LÖNNBERG, MAMMALOGY OF ECUADOR. 3l 



Skull measurements: 



Greatest length 120 mm 125 mm 117,3 mm 



Condylobasal length 112,8 » 115,3 » 108 » 



Basal length 105,(5 » 108,5 » 102 » 



Zygomatic breadth G6 » 65 » — » 



Interorbital » 26,5 » 27 » 22,7 » 



Breadth of braincase 43 » 42,8 » 43 » 



Palatal length to gnathion ... 72 » 76 » 70 » 



Foramina incisiva 6 » 5 » 5,5 » 



Front of c to back of m" . . . • 45,5 » 45 » 42 » 



Combined length of p^ and molars 19 » 19,5 » 19 » 



Length of m^ & m^ 12,8 » 12,7 » 12,7 » 



Breadth of p* 6,3 » 6,5 » 6 » 



Breadth across outsides of m- . . 31 » 29,5 » 29 » 



It is difficult to decide with which of the known forms 

 this Nasua is most nearly related. Of those known from 

 Ecuador the Nasuella-group is, of course, entirely excluded. 

 N. quichua is quite differently coloured and has a much 

 longer tail, but smaller skull and teetb. N. q. jivaro differs 

 also very mucb in colour and by its long tail. N. manium 

 is considerably larger with greater cranial dimensions and 

 larger teeth.^ Its anterior palatine foramina (foramina inci- 

 siva) are very different in shape as they are described as 

 »short, broad, and rounded.» 



Nasua candace from Medellin, Colombia, is considerably 

 larger than the one from Gualea and has a very much longer 

 tail and different colour. N. judex from Bogota differs in 

 colour but appears to have a general resemblance in pattern. 

 Its tail has eight rings, how long it is, is not mentioned in 

 the description, but Mr. Oldfield Thomas has in a letter 

 kindly communicated that it is about 31,5—32 cm, and thus 

 rather short. I hardly think, however, that the Nasua from 

 Gualea is quite identical with N. judex, but both are pro- 



^ When describing the teeth of this species Thomas uses the expres- 

 sion »m^», and writes »m^ with a welldeveloped internal cusp.» This is 

 evidently a lapsus calami meaning in the first instance mr, and in the 

 second p*, as Nasua has only two true molars. The anterior of the three 

 molariform teeth has a predecessor of the milk-dentition which is shed. 

 In the two years låter description of N. judex the same author correctly 

 speaks of »p* and two molars» which proves that the above quotations 

 are due to a lapsus calami. 



