7. CORYTHOPHANES. 101 
7. CORYTHOPHANES. 
Corythophanes, (Bote) Gray, Griff. A. K. ix. Syn. p. 55; Wiegm. Herp, 
Mex, p.15 ; Dum. §& Bubr. iv. p. 172; Fitzing. Syst. Rept. p. 52; 
Gray, Cat. Liz. p. 194; Bocourt, Miss. Sc. Mex., Rept. p. 117. 
Chamaleopsis, (Wiegm.) Gray, Griff. A. K. ix. Syn. p. 45; Wregm. 
Isis, 1831, p. 296, and Herp, Mex. pp. 15, 87; Fitzing. l.c.; Gray, 
Cat. p. 194. 
Tympanum distinct. Head with two sharp ridges uniting pos- 
teriorly into an elevated bony crest directed upwards and backwards ; 
a bony supraorbital arch formed by the pre-and postfrontal. Body 
compressed, covered with imbricate smooth or keeled scales ; a nuchal 
crest, attached to the cranial crest; a low dorsal crest. A gular 
pouch and a transverse gular fold. Infradigital lamelle keeled. No 
femoral pores, Tail long, feebly compressed. Lateral teeth tri- 
cuspid ; pterygoid teeth. No sternal fontanelle. No abdominal ribs. 
Central America ; Ecuador? 
Synopsis of the Species. 
Nuchal crest continuous with dorsal, 
descending obliquely; upper head- 
scales smooth ........ 00... eee ~ 1. cristatus, p. 101. 
Nuchal crest continuous with dorsal, 
descending obliquely; upper head- 
scales Reéled. cust, dace iauav eae, 2. percarinatus, p. 102. 
Nuchal crest not continuous with dorsal. 3. hernandesii, p. 103. 
1. Corythophanes cristatus. 
Corythophanes cristatus, Gray, Cat. p. 194. 
Agama cristata, Merr. Tent. p. 50. 
Corythophanes cristatus, Gray, Griff. A. K. ix. Syn. p. 55; Gravenh. 
Acta Ac, Leop.-Carol. xvi. li. 18385, p. 938, pl. Ixv. figs. 6-10 ; Dum. 
&§ Bibr, p. 174; A. Dum. Cat. Méth. Rept. p. 60, and Arch. Mus. 
vill. p. 517, pl. xx. fig. 1; Bocourt, Miss. Sc. Mex., Rept. p. 118. 
The upper surface of the head between the angular ridges rhom- 
boidal, twice as long as the posterior (single) ridge or crest; the 
supraciliary ridge continuous with the parictal; nostril a little 
nearer the orbit than the tip of the snout ; tympanum large, verti- 
cally oval; upper head-scales small and smooth, irregular; no 
enlarged occipital; enlarged scales on the ridges ; a series of feebly 
enlarged, not projecting, slightly keeled scales from the orbit to 
above the tympanum; eight to ten upper and as many lower labials. 
Gular region with longitudinal series of small scales separated 
by granules ; a strong crest of triangular scales along the throat. 
Nuchal crest with serrated edge, descending gradually from the 
cranial crest to the dorsal ridge, which is feebly serrated. A more 
or less distinct fold along each side of the back. Dorso-lateral scales 
