7. CORTTHOPnANES. 103 



"Width of head 17 millim. 



Body. 73 „ 



Fore limb 50 ,, 



Hind limb 87 „ 



Tail 200 „ 



Guatemala ; Ecuador ? 



a. 2 • Lanquin, Vera Paz. 0. Salvin, Esq. [C.]. 



b-d. d 2 . Ecuador (P). Mr. Eraser [C.]. 



3. Corythophanes hernandesii. 



Chaiufeleopsis hernandesii, Gray., Cat. p. 194. 

 Chaiuaeleopsis hernandesii, ( Wkgm.) Gray, Griff. A. K. ix. Syn. p. 4o; 



Wieyni. his, 1831, p. 2J8, and Ilerp. Me.c. p. 38, pi. vi. ; Gravenh. 



Acta Ac. Leop.-Carol. xvi. ii. 1833, p. 948, pi. Ixv. Hgs. 1-5; 



Gray, Zool. Beechey's T^vy. p. 94, pi. xxx. fig. 1. 

 Corythopbanes champeleopsis, Dnm. iJj- Bibr. iv. p. 170 ; Sumichrast, 



Arch. Sc. Phys. et Nat. xix. 1804, p. 58. 



(Cbauifeleopsis) hernandesii, Fitzing. Syst. Rept, p. 52. 



mexicanus, Bocourt, Miss. Sc. Mex., Rept. p. 122, pL xvii. 



fig.l. 



The upper surface of the head constricted behind the supraciliary 

 ridge, which ends iu an angle ; the parietal ridges uniting only a 

 short distance in front of the extremity of the helmet ; nostril 

 equally distant from the orbit and the tip of the snout ; upper head- 

 scales keeled or striated ; a large bony tubercle or spine above the 

 tympanum. Gular scales elongate, strongly keeled, forming longi- 

 tudinal series, separated by granules ; a feeble denticulation along 

 the throat. Nuchal crest small, descending vertically from the 

 cranial crest, not continuous with the serrated dorsal ridge. A 

 distinct longitudinal fold on the scapular and iliac regions. Dorso- 

 lateral scales irregular, unequal, the larger ones keeled ; ventral 

 scales large, strongly keeled. Limbs very long, covered with large 

 keeled scales ; the adpressed hind limb reaches considerably beyond 

 the tip of the snout. Tail as in the preceding. Olive-brown above, 

 with irregular blackish-brown spots or cross bands ; the eyelids and 

 the space between the orbit and the tympanum blackish brown ; 

 lips with or without dark vertical bars ; lower surfaces brownish, 

 with darker spots. 



Total length 345 millim. 



Head fto extremity of helmet). 44 „ 



Width of head 20 „ 



Body 05 ,, 



Fore limb 55 „ 



Hind limb 108 „ 



Tail ; 1*50 „ 



Mexico. 



