4, LACHRTA. 
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 
postmasals 2... .. cece eee ee ees 
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. 
42 to 58 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 ........ 
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( 2); tail once and a half the 
length of head and body .......... 
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 
tech ads sisi: is aye Gah es aey dase aoe 
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 thesupra- 
ciliaries ; tail not twice as long as head 
and body .......seeeeeeereeaees 
2. ocellata, p. 12. 
8. viridis, p. 14, 
5. agilis, p. 19. 
6. parva, p. 22. 
7. vivipara, p. 23. 
9. taurica, p. 26. 
6. 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 Doatanaeley no auri- 
cular denticulation.......6 4. we atah 
4. pronceps, p. 18. 
