198 IGlTANID.i:. 



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. Hgr. 5 , California. M. Botta [C.]. Paris Museum [E.]. 



(One of the types of C. internipta.) 



b. Hgr. c? . P Zoological Society. 



3. Ctenosanra qiiinquecarinata. 



Enyaliosamnis quinquecarinatus, Gray, Cat. p. 192. 

 Cyclura qiiinquecarinata, Gray, Zool. Misc. p. 50. 

 (Ctenosaura) quinqiiecarinata, Cope, Proc. A^n. Phil. Soc. 1869, 



p. 161. 

 Ctenosaura (Enyalosaurus) qiiinquecarinata, Bocourt, Miss. Sc. Mex., 



Sept. 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 Avith 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. milliiu. 



Total length 387 Fore limb 55 



Head 35 Hind limb 100 



Width of head 26 Tail 205 



Body 147 



Isthmus of Tehuantepec. 



a. Ad., stuffed. ? (Type.) 



h. Ad., stuffed. Zanatepec, Tehuantepec. 



c. 5 . Oaxaca. 



39. CACHRYX. 



Cacliryx, Cope, Proc. Ac. Philad. 18G6, p. 124 ; Bocourt, Miss. Sc. 

 Mex., Rept. p. 148. 



Tympanum distinct. Body a little compressed ; no dorsal crest ; 

 dorsal scales small. Upper head-scales small. A very strong trans- 

 verse gular fold ; no gular pouch. Digits compressed, with keeled 



