is 10, TRoPIDONoTUS. 197 ; 4 
g 5. Scales in 29 to 33 rows. ’ 
- Eye separated from the labials by subocu- q 
—— eer 46. cyclopium, p. 244. x 
Fe: Fourth labial entering the eye .......... 47. taxispilotus, p. 245. 
& III, Maxillary teeth not more than 30, last two or three abruptly _ 
y enlarged. (AMPHTESMA.) 
A. Head moderately elongate. 
1. Scales in 17 rows, smooth. 
Rostral nearly as broad as deep ; eye rather : 3 
TS ea oh ats oa 48, sexlineatus,p.246. 2 
' Rostral much broader than deep ; eye rather [p. 246. J ce 
a SS cP aera was 4 433 aac ot Pee 49. dolichocercus, 2 
5 2. Scales in 19 rows, smooth or-feebly keeled. 
2 labials entering the eye ; frontal once and 
a half as long as broad .............- 50. stumpffii, p. 247. 
2 labials entering the eye; frontal once and 
two thirds to twice as long as broad.... 51. lateralis, p. 248. 
tg 3 labials entering the eye .............. 52. platyceps, p. 248. 
3. Scales in 19 rows, strongly keeled. 
a, Two labials entering the eye. a ae 
a. 7 upper labials, 3rd and 4th entering the eye; usually ae i 
' a single anterior temporal.. 53. tigrinus, p. 249, |  . 7 
7. . 8 upper labials, 4th and 5th entering the eye; usually 
4 ' two anterior temporals. af ine 
a Subcaudals 121-128 ........... vvewians 54. pryeri, p, cee 
. ; p. 251. 
e Subcaudals 79-90 ............. ag s Cewe 55. hi 
Subcaudals 48-54 .............. --++++ 56, ceylonensis, p. 252, 
b. Three labials entering the eye. 
a. A single anterior temporal. : 
* Outer row of scales smooth. 
t Internasals broadly truncated anteriorly. 
57. beddomii, p. 252. 
tt Internasals much narrowed anteriorly. 
to 5th labials entering the eye ...... 58. stolatus, p, 253, 
to 6th labials entering the eye ...... 59. vittatus, p. 255. 
