33. CONOLOPHUS.—34, METOPOCEROS. 187 
long, roundish, slightly compressed. All the teeth trilobate; ptery- 
goid teeth*. No sternal fontanelle. No abdominal ribs. 
Galapagos Islands. 
1. Conolophus subcristatus. 
Trachycephalus subcristatus, Gray, Cat. p. 188. 
Amblyrhynchus subcristatus, Gray, Zool. Misc. 1831, p. 6, and Zool. 
Beechey’s Voy., Rept. p.93; Darwin, Journ. Beagle, p. 469. 
— ce Dum. § Bibr. iv. p.197; Bell, Zool. Beagle, Rept. 
eo Lae » XU. 
Hypsilophus (Conolophus) demarlii, Fitzing. Syst. Rept. p. 55. 
Conolophus subcristatus, Steird. Festschr. xool.-bot. Ges. Wien, 
1876, p. 322, pls. iv.-vii. 
Habit stout. Head rather small, little longer than broad; nostril 
turned upwards and slightly outwards, slightly nearer the end of 
the snout than the orbit; eye and tympanum of moderate size; 
upper surface of head covered with rather large, convex or sub- 
conical, keeled polygonal scales; occipital very slightly enlarged ; 
rostral and mental moderately large; labials twelve. Throat longi- 
tudinally plicate, covered with minute granules. A low nuchal 
crest of recurved spines, continued as a feebly serrated ridge along 
the back. Scales on the body very small, keeled on the. back, smooth 
and slightly larger on the belly. Limbs strong; digits very short; 
fifth toe not longer than second; third toe strongly denticulated 
along the inner side of the basal joint. Seventeen to twenty-one 
femoral pores on each side. Tail scarcely longer than head and 
body, feebly compressed, with very slightly serrated upper edge, 
covered with small equal keeled scales... Dark brown, lower surfaces 
and head lighter. 
centim. centim. 
Total length ........ 107 Fore limb ...... 21 
Head, cas oddest ees 9 Hind limb...... 26 
Width of head ...... 8 Wall: 3 Shhh 3 54 
BOY: tptcavaiy sages 44 
Galapagos, Central Islands. 
a. Her. Galapagos. C. Darwin, Esq. Pd 
bd. Ad., stuffed. Galapagos. Capt. Fitzroy [P.]. 
ce. Ad., stuffed. Galapagos. Haslar Collection. 
d. Left mandible. Iguana Cove. 
34, METOPOCEROS. 
Iguana, part., Daud. Rept. iii. p. 858; Fitzing. N. Classif. Rept. 
p. 17; Wiegm. Herp. Mex. p. 15. aa 
Metopoceros, Wagler, Syst. Amph. p. 147; Dum. § Bibr. iv. p. 210; 
Fitzing. Syst. Rept. p. 54; Gray, Cat, Liz, p. 188. 
Aloponotus, Dum. & Bibr. iv. p. 189; Pitzing. l.e.; Gray, Cat. p. 187. 
* The presence of pterygoid teeth has been denied by Steindachner. They 
exist in young specimens. 
