1. GERRHONOTUS. 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 sv se s0e. 1l 
Head ec eee 12 Hind limb........ 13 
Width of head .... 7 Hall eye gees .. 96 
Body: saceue'd tence 37 
Chiriqui. 
16. Gerrhonotus antauges. 
Barissia antauges, Cope, Proc. Ac. Philad. 1866, p. 132. 
Gerrhonotus viridiflavyus, Bocourt, Ann. Sc. Nat. xvii. 1873, art. 2. 
bocourti, Peters, Mon. Berl, Ac. 1876, p. 297. 
—— antauges, Bocourt, Miss. Sc. Mex., Rept. p. 346, pl. xxi. fig. 4, 
and xxi. B. tig. 7; Giinth. 1. 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. Sides 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 subquadrangular 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. 
taillim. millim. 
Total length (tail re- Body ............ 54 
produced) ...... 149 Fore limb ........ 15 
Head aeons cates 15 Hind limb........ 21 
Width of head .... 10 
Mexico. 
17. Gerrhonotus obscurus. 
Gerrhonotus obscurus, Giinth. Biol. C.-Am., Rept. p. 40, pl. xxv. 
fig. E. 
Head-scales smooth ; five preefrontals, central largest and in con- 
tact with the frontal; a pair of small shields between the rostral 
and the prefrontals ; nasal in contact with the rostral on one side ; 
a supranasal; two superposed postnasals; one loreal; two outer 
supraoculars ; ten upper labials. Sides of neck granular. Lateral 
