32Q lAXTUSIID^. 



Dorsal scales uniforDily granular ; a series of supraoculars ou 

 each side, separated by a pair of frontals forming a longitudinal 

 suture 2. Xantusia, p. 327. 



Dorsal scales uniform ; a series of supraoculars on each side, sepa- 

 rated by a large frontal 3. Cricosaura, p. 329. 



1. LEPIDOPHYMA. 



Lepldophyma, A. Dum. Cat. Meth. Hept. p. 137 ; Bocourt, Miss. Sc. 



Mex., itept. p. 306 ; Cope, Proc. Ac. PMad. 1883, p. 30. 

 Poriodogaster (^Smith), Gray, Proc. Zool. &'oc. 1863, p. 154. 



No supraoculars ; two frontals, forming a longitudinal suture ; 

 frontoparietals large, separating the interparietal from the tempo- 

 rals. Dorsal scales granular, intermixed with large tubercles. No 

 plates on the gular fold. 



Central America, 



1. Lepidophyma flavomaculatum. 



Lepidophyma flavomaculatum, A. Dum. I. c. p. 138, and Rev. ^ Mag. 



Zool. 1852, p. 409, pi. xvii. ; Sumichrast, Arch. Sc. Phys. Math. 



1873, p. 251 ; Bocourt, Miss. Sc. Mex., Bent. p. 306, pi. xx. f. 



fig. 2. 

 Poriodogaster grayii, (Smith') Gray, I. c. pi. xxi. ; Peters, Proc. Zool. 



Soc. 1874, p. 307. 

 Lepidophyma smitbii, Bocourt, Journ. Zool. v. 1876, p. 342, and I. c. 



p. 309, pi. XX. F. fig. 3, and xx. G. fig. 2. 

 Lepidophyma, sp., F. Miiller, Verh. Naturf. Ges. Basel, vi. 1878, 



p. 389, pis. i. & ii. 



Head pyramidal ; snout pointed, about twice as long as the dia- 

 meter of the orbit, which nearly equals the vertical diameter of the 

 tympanum. Ptostral pentagonal, scarcely visible from above, sepa- 

 rated from the large hexagonal or octagonal frontonasal by the pair 

 of anterior nasals which form a short suture ; the frontonasal is in 

 contact on each side with the posterior nasal and the first loreal, 

 posteriorly with the praefrontals ; latter three, median abnormally 

 missing, sometimes very small and enclosed between the laterals and 

 the frontals, sometimes larger than the laterals and in contact with 

 the frontonasal, laterals extending over the canthus rostralis to the 

 second loreal ; frontals large, extending to the supracihary edge, 

 forming a longitudinal suture between the azygos prtefrontal and 

 the interparietal ; latter hexagonal, elongate, separating the pair of 

 frontoparietals, -which are much broader and a little shorter ; a pair 

 of parietals, the largest head-shields ; two large temporals on each 

 side, anterior largest and in contact with the frontoparietal and the 

 parietal ; nostril pierced between two nasals and the first labial ; 

 two loreals, second largest ; two postoculars ; seven or eight upper 



