ERETHIZON. COENDU, 399 
Fic. LIV. ERETHIZON EPIXANTHUM. WESTERN PORCUPINE. 
Measurements. Total length, 825; tail vertebra, 165. Skull: 
occipito-nasal length, 92; Hensel, 81; greatest zygomatic width, 70; 
mastoid breadth, 47; palatal length, 30; length of upper tooth row, 24. 
The members of the genus CoENDU are essentially Tree Porcupines 
having prehensile tails to aid them in their movements among the 
branches. They are more especially natives of South America, but 
one extends its range into Mexico. They are of a more slender form 
than the Ground Porcupines; and their quills are variously colored, 
and these are mixed among the hairs, exhibiting the transition 
stage, neither all hairs nor all quills. 
SO. Coendu. Short-spined Porcupines. 
l=; P=; M= 
= 20. 
Coendu Lacép., Disc. d’ouvert. et de cloture du Cours Hist. Nat., 
Suppl., 1799, p. 11. Type Hystrix prehenstlis Linneus. 
Senetheres (sic) F. Cuv., Mém. du Mus. Hist. Nat.,. Paris, 1x, 
EO22 Pe 4S 3: 
