3. DIPLOGLOSSUS. 285 



/3. Interparietal smaller than parietals ; caudal scales 

 not or but feebly keeled. 



* Canthus rostralis strong ; loreal region concave. 



41 or 42 scales round the body 6. plioxiaus, p. 289. 



** Canthus rostralis obtuse. 



40 to 42 scales round the body ; occipital 

 not larger than interparietal ; ear- 

 opening smaller than eye-opening . . 7. striattis, p. 289. 



40 to 50 scales round the body ; occip- 

 ital larger than interparietal ; ear- 

 opening at least as large as eye-open- 

 ing; tail strongly compressed 8. occiduus, p. 290, 



50 to 56 scales round the body ; oc- 

 cipital not larger than interparietal ; 

 ear-opening at least as large as eye- 

 opening 9. heivardii, p. 291 . 



49 to 51 scales round the body, dorsals 

 with a cross elevation and marginal 

 depression, making rows of pits .... 10. imprrssufi, p. 291, 



31 to 33 scales round the body 13. steindachncri, p. 293. 



b. Frontal twice as long as broad. 



4C) scales round the body 11. microlepis, p. 292. 



2. A single pair of shields be- 

 tween the rostral and the 

 praefrontal 12. owenil, p. 292. 



B. Fore limb shorter than the skull. 



31 scales round the body ; parietals sepa- 

 rated from the frontals by the fronto- 

 parietals 14. sagrrr, p, 293. 



37 scales round the body : no fronto- 

 parietals 15. phii, p. 294. 



1. Diploglossus monotropis. 



Camilia janiaicensis, Gi-ai/, Cat. p. 110. 

 ? Scincus monotropis, Juihl, lieitr. Zool. to. Veryl. Anat. p. 128. 

 Diploglossus monotropis, Wicqm. Ilcrp. Me.v. p. 30, and Arch, f, 



Nat. 1.S37, p. 180; Peters, M<nt. Berl. Ac. 180 1, p. 48; Cope, Proc. 



Ac. PhUad. 1808, p. OS, and Juurn. Ac. Phdad. (i') viii. 1878, 



p. 118; Bocourt, Miss. Sc. Mex., Rept. p. 391, pi. x.xii. fig. 0; 



(Plinth. Biol, Ccntr.-Am., livpt., p. .'54, pi. xxiii. 

 Tiliqua janiaicensis, Gray, Ann. N. I£. ii. 1830, p. 293. 



Lateral teeth distinctly bicuspid. Head scarcely distinct from 

 neck ; snout short and broad, canthus rostralis rounded ; car-opening 



