24. LioL.EMcs. 139 



1. Ventral scales smooth. 



42 or 44 scales round the middle of 



the body ; interparietal smaller than 



parietals ; a long band-like scale on 



the supero- anterior border of the 



ear 4. lemniscatus, p. 14i}. 



50 scales round the middle of the 



body ; interparietal a little larger 



than i)arietals G. fuscus, p. 144. 



40 scales round the middle of the 



body ; keels of the dorsal scales 



forming continuous straight lines . . 7. gracilis, p. 145. 



2. Ventral scales slightly keeled. 5. stantoni, p. 144. 



B. Scales on the middle of the back not larger than those on the 

 sides of the belly. 



1. Ventral scales not larger than dorsals. 



a. Lateral scales as large as or but little smaller than 



dorsals. 



■■& 



a. Dorsal scales elongate rhomboidal, ending in a small 

 spine or mucro. 



40 scales round the middle of the 



body ; the distance from the base 



of the fifth toe to the extremity of 



the fourth toe exceeds the length of 



the head 8. cyanog aster, p. 145. 



50 to 58 scales round the middle of 



the body U. hibronii, p. 146. 



40 to 44 scales round the middle of 



the body ; the distance from the 



base of the fifth toe to the extre- 

 mity of the fourth does not exceed 



the length of the head 11. tiuujeUanicus, p. 148. 



/3. Dorsal scales simply pointed. 



48 to 54 scales round the middle of 



the body 10. nir/romaculatus, p. 147. 



More than 60 scales round the middle 



of the body ; hinder side of thighs 



uniformly granulate 13. litic/ii, p. 149. 



More than 60 scales round the middle 



of the body ; hinder side of thighs 



with a patch of enlarged i-homboidal 



scales 14. Jilzinyeri, p. 150. 



