6. CNEMIDOPnORUS. 361 



a. Frontoparietals distinct. 

 * Supraoculars normally four. 



Three large prceanals ; caudal scales 

 strongly oblique, the keels distinctly 

 subdiagonal, their posterior border 

 forming an angle 5. sexlineatus, p. 364, 



Three large prteauals ; caudal scales 



scarcely oblique 6. mariarum, p. 368. 



Prteanals in 4 transverse series, the pos- 

 terior two containing 6 7. maximus, p. 369. 



** Supraoculars normally three. 



Posterior row of mesoptychial scales sepa- 

 rated from the edge of the collar by 

 2 or 3 rows of granules ; femoral plates 

 in 8 to 12 rows, tibials in 3 8. guttatus, p. 370. 



No granules between the mesoptychial 

 scales and the border of the collar ; 

 femoral plates in 10 rows 9. immutaUlls, p. 370. 



Posterior row of mesoptychial scales sepa- 

 rated from the edge of the collar by a 

 row of granules ; femoral plates in 6 

 or 7 rows, tibials in 2 10. dejypii, p. 371. 



/3. Frontoparietals united . . 11. hyperytkrus, p. 371. 

 h. Not more than 12 femoral pores on each side. 



Inner edge of supraoculars bordered by 



a row of granules 12. oceUifer, p. 372, 



No granules between the frontal and the 



supraoculars 13. multllineatus, p. 373. 



2. 10 or 12 longitudinal rows of ventral plates. 



No granules between the frontal and the 



supraoculars; dorsal scales granular . . 14. lacerioides,^. ^13. 

 Inner edge of supraculars bordered by a 



row of granules ; dorsal scales flat, 



hexagonal 15. longicauda, p. 374. 



II. Scales on the hind part of the back 

 larger, rhomboidal, keeled, im- 

 bricate 16. heterolepis, p. 375. 



1. Cnemidophorus murinus. 



Cnemidophorus mminus, Gray, Cat. p. 21. 

 Seps mm-inus, Laur. Syn. Repf. p. 63. 

 Lacerta ameiva, part., Dand. Itept. iii. p. 98. 

 Ameiva inuriiiu, Fitzimj. N. Class, p. 51. 



Cnemidophorus murinus, Dum. ^ Bibr. v. p. 126 ; Bocouri, JL'ss. Sc. 

 Mex., Kept. pi. xx. c. tig. 1. 



