108 IGUANID.E. 



1. Basiliscus americanus. 



Basiliscus americanus, Gray, Cat. p. 192. 

 Thj^sanodactylus biliueatus, Gray, I. c. p. 194. 

 Lacerta basiliscus, Linn. S. iV. i. p. 366. 

 Basiliscus americanus, Law. Syn. Bept, p. 50 ; Bocourt, Miss. Sc. 



Me.v., Ecpt. p. 127 ; Giinth. Biol. C.-Amer., Rept. p. 54. 

 Iguana basiliscus, Latr. Rept. ii. p. 258. 

 Basiliscus mitratus, Daud. Rept. iii. p. 310, pi. xlii. ; GiiSr. Icon. R. 



A., Re^it. pi. xi. tig. 2; JDum. ^- Bihr. iv. p. 181 ; Diivern. R. A., 



Rept. pi. xviii. fig. 1 ; Cope, Journ. Ac. Philad. (2) viii. 1876, 



p. 125, pi. XXV. fig. 2. 

 Ophryoessa bilineata, Gray, Zool. Beechey^s Voy. p. 94. 

 Lopbosaura gooclridgii, Gray, Ann. ^- 3lay. N. H. (2) x. 1852, p. 438 ; 



Richards. Zool. Herald, p. 143, pi. xxvi. 

 Basilicus guttulatus. Cope, I. c. pp. 125, 156. 

 goodridgii, Cope, I. c. p. 125. 



Head-crest more or less regularlj' hood-shaped, rising from an 

 imaginary line connecting the superior borders of the ear-openings, 

 preceded by a more or less distinct keel to between the posterior 

 borders of the orbits. Six or seven labials to below the centre of 

 the eye. The three or four anterior chin-shields in contact with 

 the infralabials. Dorsal crest much developed, sometimes quite as 

 high as the body, supported by bony rays, covered with large thin 

 scales. The lateral fringe of the toes very strongly developed. 

 Caudal crest like the dorsal, though not quite so high. Ventral 

 scales perfectly smooth. Olive-brown above, with more or less 

 distinct angular black cross bars on the back ; a more or less distinct 

 lighter band on the temple to the neck, and another, broader and 

 more distinct, from the loreal region to the fore limb. 



Total length 800 millim. 



Head 60 



Width of head 35 



Body 180 



Fore limb 95 



Hind limb 205 



Tail 560 



5> 



Panama and Costa Rica ; Martinique (?) ; Guianas (?). 



a, b. c? . Tropical America, 



c. c?, stuffed. Tropical America. 



d. c5' , stufied. Costa Rica. F. D. Godman, Esq. [P.]. 



e. Yg. Fernando de Norouha (?). II.M.S. ' Chanticleer. 



(Type of Ophryoessa bilineata.) 

 ./•• Yg. ? 



2. Basiliscus plumifrons. 



Basiliscus pkuuifrons, Co^ie, Journ. Ac. I'/iilad. (2) viii. 1876, p. 125, 

 pi. XXV. tig. 1. 



Head-cvest consisting of a principal posterior portion and an 



