62 COLUBRID, 
Scales in 19 rows; ventrals 260 ; anal 
entire; subcaudals 116; one pre- 
ocular, not extending to upper 
surface of head ..............-- 18. flavescens, p. 77. 
Scales in 19 rows ; ventrals 240; anal 
divided ; subcaudals 133 ; two pree- 
oculars, extending; to upper surface 
ee rr 19. philippinus, p. 77. 
Scales in 21-25 rows; ventrals 265- 
274; anal divided ; subcaudals 123- 
147; one or two preoculars, not 
extending to upper surface of head. 20. blandingii, p. 77. 
Scales in 23-25 rows; ventrals 248- 
290; anal entire; subcaudals 114— 
156; one preocular, extending to 
upper surface of head; rostral 
scarcely visible from above ...... 21. cynodon, p. 78. 
B. Posterior chin-shields not or but slightly larger than the 
anterior ; scales in 25 to 31 rows; ventrals 254-270; anal 
entire; subcaudals 103-131.. 22. forstenii, p. 80. 
TABLE sHOwrnG NumBeErs or ScALES AND SHTELDs. 
Se, i A. 0. Lab. | Pr. oc. | Pt. oc. 
trigonatus ......... 21 | 209-238; 1 | 76-92 8 1 2 
multimaculatus |17-19 | 202-235} 1 | 80-106 8 1 2 
00! © es. cectusene 21 | 224-225; 1 | 87-94 8 1-2 2 
AGONOtUS ...... 19-21 | 218-250} 1 | 94-140 | 8-9 1 2 
Ceylonensis.....+++. 19-21 | 214-268] 1 | 90-125] 8-9 1-2 2 
 SakdacVanvenal 19-21 | 286-257} 1 | 87-103 | 8-9 1 2 
pulverulentus . 19 | 240-260) 1 |110-124) 8-9 1-2 2-3 
multifasciatus . 21 | 231-248} 1 | 96-109; 8 1 2 
dightonit ......... 241 1 95 8 1 2 
dendrophilus ...... 21-23 | 209-239} 1 | 89-110 | 8-9 1 2 
CYANCUS oo 00000000 21 | 237-252} 1 |124-188; 8 1 2 
MEGTICEPS s..+0000. 21 | 240-263} 1 |140-144] 8 1 2 
FASPideUus ...+0004: 21 | 243-266} 1 |140-166| 8 1 2 
barnesié ......00000+ 19 220 1 99 8 3 2 
Arapiezti .....006 19 |250-276| 1 |114-163; 8 1 2 
ANGUIALUS «41.2044 19 | 254-258} 1 |126-135; 8 1 2 
iitbewen 19-23 | 217-270} 1 | 103-125)|'8-10 1 2 
RS Ae De 19 1 116 1 3 
philippinus +... 19 240 2 133 8 2 2 
blandingié ....++ ++. 21-25 | 265-274] 2 | 123-147; 8-9 1-2 2-3 
ONO Bakenis acne 23-25 | 248-290} 1 | 114-156) 8-10 1 2 
Jorstenii sebaddarehad 25-31 | 254-270} 1 | 103-131) 8-11 1 2-3 
1. ARGENT trigonatus. 
Russell, Ind. Serp. i. pl. xv. (1796). 
yok trigonatus, sino in Beehst. Uebers, Lacép. iv. p. 156 
