56 LACERTILIA. 
ENYALIUS. 
Enyalius, Wagler, Syst. Amphib. p. 150. 
Of the ten or eleven species of this South-American genus, only the following occur 
north of the Isthmus of Darien. We have not seen it. 
1. Enyalius heterolepis. | 
Enyalius heterolepis, Bocourt, Ann. Se. Nat. xix. 1874, art. 4, and Miss. Sc. Mex., Rept. t. 20c. 
fig. 14. 
Hab. Panama, Veragua. 
IGUANA. 
Iguana, Laurenti. 
1. Iguana rhinolophus. 
Iguana rhinolophus, Wiegm. Herp. Mex. p. 44; Dum. & Bibr. Erp. Gén. iv. p. 207; Tyler, Proe. 
Zool. Soc. 1850, t. 8 (Metopoceros cornutus) ; Cope, Proc. Ac. N. Sc. Phil. 1862, p. 356 ; 
Sumichrast, Ann. & Mag. N. H. 1864, xin. p. 500; Bocourt, Miss. Sc. Mex., Rept. p. 134; 
Cope, Journ. Ac. N. Sc. Phil. vii. 1876, p. 124. 
Hab. Mextco, Mazatlan and Presidio (Forrer), Cordova (Sallé), Tehuantepec and Rio 
Coazacoalcos (Sumichrast), Cozumel Island on the coast of Yucatan (G. F. Gaumer) ; 
Guaremaa, Chiapam (Salvin); Costa Rica (Cope) ; Panama (Brit. Mus.), Darien, 
R. Truando (Schott). 
“Touana verde ” of the Creoles; “ Guchachi-guéla ” of the Zapotec Indians. 
This is the northern or Central-American race of the South-American J. tuberculata ; 
it does not seem to extend southwards beyond the Isthmus of Darien, but occurs also 
in the island of Santa Lucia and probably other parts of the West Indies. 
9. Iguana tuberculata. 
Iguana tuberculata, Laur. Syn. Rept. p. 49. 
Hab. Guarumata (Salvin); Honpuras (Brit. Mus.) ; Nicaragua (Brit. Mus.); PANaMa 
(Dow), Darien (Schott).—Generally distributed over the northern parts of SouTH 
America and BraziL; occurring also in many West-Indian Islands. 
CTENOSAURA. 
Ctenosaura, Wiegmann, Isis, 1828, p. 371. 
1. Ctenosaura acanthura. 
Lacerta acanthura, Shaw, Zool. ii. 1802, p. 216. 
Cyclura teres, Harlan, Journ. Ac. Sc. Phil. 1825, p. 246, t. 16. 
Ctenosaura cycluroides, Wiegm. Isis, 1828, p. 371; Bocourt, Miss. Sc. Mex., Rept. p. 143 (part.) ; 
Sumichrast, Bull. Soc. Zool. Fr. v. 1880, p. 175. 
Ctenosaura shawii, Gray, Wiegm. 
