]. GEREH0N0TU3. 269 



inillim. millim. 



Total length 2;i4 Fore limb 26 



Head 23 Hind limb 'M 



Width of head 18 Tail 138 



Body 73 



Oaxaca. 



a, b. c? & jg. Oaxaca. (Types.) 



2. Gerrhonotiis gramineus. 



GeiTlionotus gramineus, Cope, Proc. Ac. Philad. 18G4, p. 179 ; Gi'inth. 

 Biol. C.-Am., liept. p. -jO, pi. xxiv. iig. B. 



Very closely allied to the preceding species, from which it diiFers 

 in the foUovring points : — Sides of neck covered with small eqnal 

 subgranular scales : a slight fold from the ear to the fore limb. 

 Lateral fold stronger, enclosing granular scales. Dorsal scales in 

 twelve or thirteen longitudinal series, very indistinctly keeled. 

 Ventrals in twelve longitudinal series ; two ventral series corre- 

 spond to one dorsal. Eleven upper labials, eleventh forming with 

 the lower temporals an obliquely ascending series of five shields. 

 Pea-green above, each transverse series of dorsal scales black at the 

 base ; lower surface of the head yellowish-white, of body pale 

 green. 



Orizaba. 



a. (S , not good state. Orizaba. 



3. Gerrhonotiis deppii. 



Abronia deppii, Graif, Cat. p. 53. 

 Gerrhonotus deppii, Wiegm. Isis, 1828, p. 379, and Herp.Me.v.-^. 31, 



pi. ix. iig. 2 ; Bum. Sj- Bihr. v. p. 308. 

 Abronia deppii. Gray, Ann. N. H. i. 1838, p. 389. 

 Gerrhonotus (Abronia) deppii, Bocourt, Miss. Sc. Mex., Rcpt. p. 325, 



pi. xxi. A. fig. 3. 



Head very distinct from neck ; head-shields smooth ; a pair of 

 small shields behind the rostral ; five prtefrontals, the central a 

 little smaller and completely enclosed between the others ; nasal 

 separated from the rostral ; a small supranasal ; two small super- 

 posed postnasals and two lorcals, second largest ; four small outer 

 supraoculars ; frontal touching the interparietal ; ten upper labials, 

 last two much larger than the others, and than the temporals. Sides 

 of neck covered with granular scales. Lateral fold feeble, com- 

 mencing in advance of the arm. Xuchal scales in six longitudinal 

 series. Dorsal scales in ten or eleven longitudinal series (thirteen 

 or fourteen in the middle of the body), obli(|ue, much larger thau 

 ventrals, smooth ; twenty-seven transverse series. Ventrals in 

 thirteen or fourteen longitudinal series. Limbs short. Tail a littlo 

 longer than head and body ; caudal scales smooth. Dark brown 

 above, with yellow spots forming transverse bands on the body, 

 limbs, and tail ; lips and lower surfaces yellowish white. 



