198 IGUANIDE. 
darker cross bands, of which a narrow one between the shoulders 
and two broader ones behind it are black; lower surfaces whitish ; 
lower lip with vertical dark brown bars; throat marbled with 
brown ; belly and lower surface of limbs with round dark brown 
spots. 
Lower California. 
a. Her. 9. California. M. Botta [C.]. Paris Museum [E.]. 
(One of the types of C. interrupta.) 
6. Her. og. —-P Zoological Society. 
3. Ctenosaura quinquecarinata. 
Enyaliosaurus quinquecarinatus, Gray, Cat. p. 192. 
Cyclura quinquecarinata, Gray, Zool. Misc. p. 59. 
(Ctenosaura) quinquecarinata, Cope, Proc. Am. Phil. Soc. 1869, 
p- 161. 
Ctenosaura (Enyalosaurus) quinquecarinata, Bocourt, Miss. Sc. Mez., 
Rept. p. 138, and Le Natur. 1882, p. 47. 
Scales on posterior part of back a little larger than on the belly, 
rhomboidal, obtusely keeled. Dorso-nuchal crest very low, extend- 
ing to the sacrum. Outer side of tibia with large spinose scales. 
Tail scarcely longer than head and body, much depressed in its an- 
terior third, cylindrical posteriorly ; its upper surface with alternate 
rings of larger and smaller scales, the central, and especially the two 
lateral series of the former, very large and spinose ; its lower surface 
with transverse series of smaller, pointed, keeled scales. Six femoral 
pores on each side. Yellowish-olive above, with a dark brown net- 
work and more or less indistinct transverse cross bands ; lower sur- 
faces yellowish, uniform or spotted with brown. 
millim. moillim 
Total length ...... 387 Fore limb ........ 55 
Head castes nese 35 Hind limb........ 100 
Width of head .... 26 JU ewer re te 205 
Ody: sctinetes seus 147 
Isthmus of Tehuantepec. 
a. Ad., stuffed. P (Type.) 
2. Ad., stuffed. Zanatepec, Tehuantepec. 
e. Q. Oaxaca. 
39. CACHRYX. 
Cachryx, Cope, Proc. Ac. Philad. 1866, p. 124; Bocourt, Mi 
Mex., Rept. p. 148, ae : rere 
Tympanum distinct. Body a little compressed ; no dorsal crest ; 
dorsal scales small. Upper head-scalessmall. A very strong trans- 
verse gular fold; no gular pouch. Digits compressed, with keeled 
