99. CONTIA. PASTY 
c. Kight upper labials ; ventrals 133; subcaudals 50; scales 
HUM OWS cc ccs ss casas hues 17. pachyura, p. 267. \\— 
2. Nasal divided or semidivided ; scales in 15 rows; ventrals 
147-167; subcaudals 29-39. 
Aion POS LOG BES Ar. oo, 5 signee aie hs ell e's sche 18. mitis, p. 267. <= — 
MnTee MascOeUlATS. 20% Oetja sts es wie hae 19. semiannulata, 
[p. 268. 
II. Rostral large, the portion seen from above as long as or a little 
shorter than its distance from the frontal; scales in 17 rows. } $2 
Nasal entire or semidivided ; ventrals 110— 
137; subcaudals 23-40 ............ 20. nasus, p. 268. 
Nasal divided; ventrals 141-160; sub- 
CANUHIS OO LO nares wis nie «hugs oe eee 21. frontalis, p. 270. 
TABLE SHOWING NUMBERS OF SCALES AND SHIELDS. 
a) 
I. Old-World species. ©“ 
| 
Scales. Ventrals. | Caudals.| Postoculars.! Labials. 
decemlineata ... 17 1522175 64-85 2; 7 
Collaris ........- V5=1'7 150-191 50-78 12 a 
VOSCUALO ween neve: 15 158-171 48-62 2 7 
angusticeps ... 15 186 86 1 7 
POURS ee oe cence ilay 159-187 40-60 2 7 
PICT SIC, Soca c= 15 194-216 63-717 1 7 
WALEETO ...s0c00s 15 211-235 73-82 1 1 
coronella ...... eetb=19 103-148 24-52 1-2 7 
II. American species. 
Scales. Ventrals. | Caudals. | Postoculars.| Labials. 
GSE. soca as « 15 148-166 | 111-148 2 "/ 
vernalis ........- 15 119-148 65-94 1-2 7 
agassizti ...... 13 128-158 51-64 2 7 
LEALOTE «0s v0tas 13 126-137 37-46 2, a 
EPISCOPA .....+... 15 145-163 35-57 2 7 
torquata ...... 15 183 38 2 7 
480ZONG ......... 15 158-167 50-52 2 Uf 
occipitalis ...... 15 147-158 34-44 2 7 
pachyura ....6. 17 133 50 2 8 
MBLISY wadesee seek 15 147-167 29-39 2 i 
semiannulata... 15 149 39 3 a 
NOSIS oe hasan 17 110-137 23-40 2 ff 
frontalis ...... 17 141-160 38-48 2 7 
VOL. II, S 
