3o. IGUANA. 189 



San Domingo, Navasa. 



a. (S . ? Zoological Society. 



h. 5 , stuffed. ? Zoological Society. 



c. Skeleton of h. 



35. IGUANA. 



Iguana, part., Laur. Syn. Rept. p. 47; Baud. Rept. iii. p. 358; 



Fitzinc/. N. Classif. Rept. p. 17; Wiecpn. Ilerp. Me.v. p. 15. 

 Iguana, Grai/, Ann. Phil. (2 ) x. 18:?5, p. 197 ; Dum. .\' IJlhr. iv. p. 199 ; 



Grai/, Cot. Liz. p. 18(5; Bocoiirt, Miss. Sc. Mc.r., Rept. p. l.j-'». 

 Hypsilnphus, JFat/kr, Si/st. Amph. p. 147 ; Fitzing. /St/st. Rept. 



p. 54. 

 Amblyi'hyuchus (non Bell), Wayl. I. c. p. 148. 



Tympai]um distinct. Body compressed ; a dorsal crest ; dorsal 

 scales small. Upper bead-scales large. A transverse gular fold, 

 and a large non-dilatable gular apjjcndage. Digits compressed, with 

 keeled lamella? interiorly. A long series of femoral pores. Tail long, 

 compressed. Lateral teetb denticulated ; pterygoid teetb. A small 

 sternal fontanelle. One or two poststernal ribs. 



Tropical America. 



1. Iguana tuberciilata. 



Iguana tuberculata, Oraij, Cat. p. 186. 

 Iguana tubercidata, Law. Syn. Rept. p. 49; Dum. S,- Bihr. iv. p. 203; 



A. Dum. Arch. Mus. viii. p. o2(i. 

 Lacerta iguana, Shaiv, Znol. iii. p. 199 ; Duvern. R. A., Rept. pi. xvii. 

 Iguana delicatissima (/ion Laur.), Daud. Rept. iii. p. 263, pi. xl. 

 cferulea, Daad. I, c. p. 280 ; Spix, Sj}ec. Nov. Lacert. Bras. p. 7, 



pi. vii. 



sapidissima, Merr. Tent. p. 47. 



squamosa, Spix, I. c. p. 5, pi. v. 



viridis, Spir, I. c. p. 6, pi. vi. 



emarginata, Spi.r, I. c. p. 7, pi. viii. 



lophyroides, Spix, I. c. p. 8, pi. ix. 



Hypsilophus iguana, TJ'ayl. Syst. Amph. p. 147. 



Head moderately large ; snout rounded, witb obtuse eantbus ros- 

 tralis ; nostril ratber large, pierced in a swollen nasal, near tbe tip 

 of tbe snout ; tympanum large, oval ; bead-scales smootb, variable 

 in sbape, large on the forehead and between tbe orbits ; the inter- 

 orbital series either in contact or separated ; supraocular scales 

 small ; occipital enlarged ; rostral large, pentagonal, mental smaller ; 

 ten to twelve labials. Anterior border of the gular ai)pendage with 

 a crest of large triangular compressed scales ; gular scales very 

 small on the appendage, larger and in several rows on the sides near 

 tbe labials, increasing in size towards a large circular sbield situated 

 below the tympanum. Dorso-nucbal crest continuous, composed of 

 falciform lobes, the length of which varies considerably ; most de- 

 veloped ill the full-grown males. Dorsal scales very small, ccjual, 

 keeled ; neck with scattered large conical or olttuselv keeled 



