CORYTHOPHANES. 101 



7. CORYTHOPHANES. 



CorythopLanes, (Boie) Gray, Griff. A. K. ix. Syn. p. 55 ; Wiegm. Ilerp. 



Mex. p. 15 ; Dum. ^- Bihr. iv. p. 172 ; Fitziny. Syst. Rcpt. p. 52 ; 



Gray, Cat. Liz. p. 11)4; Bocourt, Miss. Sc. Mex., Rept. p. 117. 

 CliaiiiJBleopsis, {Wicym.) Gray, Griff. A. K. ix. Syn. p. 45; Wicym. 



Isis, 1831, p. 2'JG, and Ilerp. Mex. pp. 15, 37 ; Fitziny. I. 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 pra^- and postfroutal. 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 lamella3 keeled. No 

 femoral pores. Tail long, feebly compressed. Lateral teeth tri- 

 cuspid ; pterygoid teeth. No sternal foutanelle. No abdominal ribs. 



Central America ; Ecuador? 



Synopsis of tlie Species. 



Nuchal crest continuous with dorsal, 

 descending obliiiuely ; upper head- 

 scales smooth 1. cristatas, p. 101. 



Nuchal crest continuous with dorsal, 

 descending obliquely ; upper head- 

 scales keeled 2. percarinatiis, p. 1(»2. 



Nuchal crest not continuous with dorsal. 3. heraandesii, p. 103. 



1. Corythophanes cristatus. 



Corythopbanes cristatus, Gray, Cat. p. 194. 

 Agama cristata, Merr. Tent. p. 50. 

 Corytlioplianes cristatus, Gray, Griff. A. K. ix. Syn. p. 55; Gravenh. 



Acta Ac. Leop.-Carol. xvi. ii. 1833, p. 9.38, pi. Ixv. figs. 0-10 ; Diun. 



(§• Bihr. p. 174; A. JDum. Cat. Meth. Rept. p. (iO, ajid Arch. Mas. 



viii. p. 517, pi. XX. fig. 1 ; Bocourt, Miss. Sc. Me.c, 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 parietal ; 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 tympaiium ; 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 fi'om the 

 cranial crest to the doi-sal ridge, which is feel)ly serrated. A more 

 or less distinct fold along each side of the back. Dorso-lateral scales 



