4. LiLCBRTA. 9 



2. Tail not spinose. 



a. Lateral scales (in the middle of the body) not smaller 

 than dorsals. 



70 to 108 scales round the middle of the 



body (ventrals included) ; rostral en- 

 tering the nostril ; two superposed 



postnasals 2. ocellata, p. 12. 



46 to 66 scales round the middle of the 



body ; rostral usually entering the 



nostril ; normally two superposed post- 

 nasals ; foot, in the female and young, 



longer than the head ; tail at least 



nearly twice as long as head and body. 3. viridis, p. 14. 

 42 to 5S scales round the middle of the 



body ; rostral not entering the nostril ; 



one or two postnasals, frequently two 



superposed anterior loreals ; no gra- 

 nules between the supraoculars and the 



supraciliaries ; foot not longer than the 



head ; tail not over once and two thirds 



the length of head and body 5. ar/iJis, p. 19. 



46 scales round the middle of the body ; 



rostral not entering the nostril ; two 



superposed postnasals ; a series of 



granules between the supraoculars and 



the supraciliaries ; foot longer than 



the head ( 5 ) ; tail once and a half the 



length of head and body 6. parva, p. 22. 



32 to 45 scales round the middle of the 



body ; rostral not entering the nostril ; 



normally a single postnasal and a 



single anterior loreal; no granules 



between the supraoculars and the 



supraciliaries ; foot usually longer than 



the head 7. vtvipara. p. 23. 



56 to 63 scales round the middle of the 



body ; rostral touching the nostril ; 



a single postnasal ; a series of granules 



between the supraoculars and the supra- 

 ciliaries ; tail not twice as long as head 



and body 9. taurica, p. 26. 



h. Lateral scales smaller than dorsals ; latter more or less 

 distinctly imbricate, diagonally keeled ; 40 to 46 scales 

 round the middle of the body (ventrals included). 



Ventrals in 8 or 10 longitudinal rows ; 

 two superposed postnasals; no auri- 

 cular denticulation 4. pnnceps, p. 18. 



