1. GEKllUOXOTUS. 277 



in ten longitudinal series. Upper surface of head and eight irre- 

 gular rhomboidal spots on the body, yellowish- white, separated by 

 narrow dark brown interspaces ; tail annulate brown and yellowish ; 

 belly blackish. 



millim. millim. 



Total length 145 Fore limb 11 



Head 12 Hind limb 13 



Width of head 7 Tail 00 



Body 37 



Chiriqui. 



16. Gerrhonotus antauges. 



Barissia antauges, Coiie, Ih-oc. Ac. Fhilad. 18G6, p. 132. 

 Gerrlionotus viridiflavus, Bocourt, Ann. Sc. Nat. xvii. 1873, art. 2. 



bocouiti, reters, Mem. Berl. Ac. 1876, p. 207. 



antauges, Bocourt, Miss. Sc. Mex., Rept. p. 340, pi. xxi. fig. 4, 



and xxi. B. iig. 7 ; Giinth. I. c. p. 37. 



Head-shields smooth; four pairs of shields between the rostral 

 and the frontal, the two anterior very small ; the second pair some- 

 times separated ; nasal separated from the rostral ; two superposed 

 postnasals ; one loreal ; two or three outer supraoculars ; ten upper 

 labials. Hides of neck covered with granular scales. Lateral fold 

 strong, extending on the neck. Dorsal scales in fourteen longi- 

 tudinal series, the median smooth or obtusely keeled, the laterals 

 smooth ; fifty transverse series. Ventral scales nearly the same size 

 as dorsals, in twelve longitudinal series. Tail subcjuadrangular at 

 the base ; upper caudal scales more strongly keeled than the dorsals. 

 Bronzy green above ; head spotted with black ; three longitudinal 

 bands on the back ; flanks and sides of neck with a black network 

 enclosing greenish-white dots ; a whitish streak on the side of the 

 head; lower surfaces dark green with numerous small angular 

 yellowish- white spots, or lighter with small greenish-black spots. 



millim. millim. 



Total length (tail re- Body 54 



produced) 140 Fore limb 15 



Head 15 Hind limb 21 



Width of head 10 



Mexico. 



17. Gerrhonotus obscurus. 



Gerrhonotus obscurus, Giinth. Biol. C.-Am., licpt. p. 40, pi. xxv. 

 tig. K. 



Head-scales smooth ; five prajfrontals, central largest and in con- 

 tact with the frontal ; a pair of small shields betwei^n the rostral 

 and the pra;frontals ; nasal in contact with the rosti-al on one side ; 

 a supranasal ; two superposed ])ostnasals ; one loreal ; two ouler 

 supraoculars; ten upper labials. Sides of neck granular. Lateral 



