402 COENDU. 



418. mexicanum (Hystrix), Kerr, Linn., Anim. King., 1792, p. 214. 

 novat-hispani& Briss., Regn. Anim., 1756, p. 127. 



prehensilis Schreb., Saugeth., iv, p. 6o3 x 

 PREHENSILE-TAILED PORCUPINE. 



Type locality. Mountains of Mexico. 



Geogr. Distr. Mirador, State of Vera Cruz, Mexico, south to 

 Costa Rica. 



Gcnl. Char. Tail short, stout, bare of spines on apical half. 



Color. Body covered with yellow and white spines, with black 

 tips; the fur amid these on the body and limbs is black, with the tips 

 of hairs white; basal half only of tail covered with spines, remainder 

 with stiff black hairs. 



Measurements. Total length, 750; tail, 320; hind foot, 88 

 (dried skin.) Skull: occipito-nasal length, 82; total length, 84; 

 zygomatic width, 52; interorbital constriction, 27; palatal length 

 (palatal arch to anterior edge of premolar), 16; length of upper 

 molar series, alveolar border, 18 ; length of mandible, angle to alveolus 

 of incisor, 54; length of lower tooth row, alveolar border, 22. 



a. yucatanice (Coendu), Thomas, Ann. Mag. Nat. Hist., 7th Ser., 



x, 1902, p. 249. 

 YUCATAN TREE PORCUPINE. 



Type locality. Izamal, Yucatan. 



Genl. Char. Similar to C. mexicanum; black fur shorter. Skull 

 with nasals parallel, not expanded anteriorly; forehead inflated; 

 braincase narrow; anterior palate flat; bullae high, narrow. 



Color. Like that of C. mexicanum. 



Measurements. Total length, 820; tail, 380; hind foot with claws, 

 74. Skull : greatest length, 88 ; basilar length, 75 ; zygomatic breadth, 

 48.5; nasals, 30.5 X 19; height of forehead above palate, 97; inter- 

 orbital breadth, anteriorly, 30; posteriorly, 36; breadth of braincase 

 behind zygomata, 33; palatal length, 38.5; palatal foramina, 8 X 3.2; 

 length of upper tooth row, 18.1. 



419. laenatum (Coendu), Thomas, Ann. Mag. Nat. Hist., 7th Ser., xi, 



1903, p. 381. 

 CHIRIQUI PORCUPINE. Gato de Spinas in Chiriqui. 



Type locality. Boquete, Chiriqui, Panama. Altitude, 5,000 feet. 



Genl. Char. Spines not showing through fur on tail or limbs. 

 Skull flat, not inflated on frontal region; anterior portion of pre- 

 maxillae projecting but slightly in front of nasals; nasals broad ante- 

 riorly, narrowing posteriorly; supraorbital edges square, ridges well 

 defined ; palatal foramina ending at premaxillo-maxillary suture ; pos- 

 terior edge of palate on line with posterior edge of second upper molar. 



