1890.] SOUTH-AMEIUCAN C.VMD.E. 113 



centimeters. 



Length of M^ -62 



Breadth of P^ -o 



MJ 1-0 



,. ^ -8 



Length of p. 1 "2 



PT2 -50 



P^ ''^'' 



P. 4 -(J^ 



MA 1-05 



„ M^ '8 



M.3 -4 



Breadth of M. 1 '55 



„ U72 '55 



mTs -4 



The species of Canis previously referred to seem to arrange tliem- 

 selves in three sets : — 



(1) Forms allied to, and probably varieties of, C. azar<e, in 



which P- -t is relatively large, averaging, as compared with 

 M.1+M .2, 100 to 118. 



(2) Forms aUied to C. cancrivorus, in which F- 4 is rather small, 



averaging 100 to 125. 



(3) Forms allied to C. parvidens (C. vetulus of Burmeister, but 



not of Lund), in which P- 4 is extremely small, averaging 

 100 to IGO. 



If these views are not mistaken, the species and varieties will 

 stand thus : — 



\. C. cancrivorus. Brazil. 



Variety (a) : hrasiliensis. Brazil. 



IL C. microtis. Brazil. 

 ITT. C. azarcB. Brazil to Tierra del Fnego. 

 Variety («) : fulvipes (dark). Chiloe. 



(i) : (jriseus (pale). Shores of tlie Straits of 



Magellan, 

 (c) : pafagonicus (ring-tailed). Shores of the 



Straits of Magellan. 

 (d) : entrerianus (dark). Entre Rios. 

 (e) : gracilis (pale). jNIendoza. 

 {/): Lvmd's vetulus (pale). Brazil. 

 \g)'. Lund's _/«Zf/caMf/M5 (bright-tailed). Brazil. 

 IV. C. parvidens, mihi (very small J^^). Brazil. 



Variety (a) : Burmeister's vetulus (pale-tailed). Lagoa 

 Santa, 

 (i) : Burmeister's fulvicaudus (bright-tailed). 

 Lagoa Santa. 

 V. C. urostictus, mihi (black stripe on tail). Brazil. 



