Not as above 3 
Dark arrow-shaped mark on nape with light front margin; top 
of head grayish white, without markings; body without yellow 
and red karlschmidti 
Dark arrow on nape without light edge; head with or without 
dark markings; yellow and red between trunk scales... 
macrops 
Ptyas 
Scale rows 15-15-11 or 15-13-11; ventrals less than 175; 
dorsum brown, each scale with blackish brown streak... 
korros 
Scale rows 19-17-14; ventrals more than 185; dorsum dark 
brown, a dark network or crossbars mucosus 
Rhabdophis 
Scale rows 15 at midbody 2 
Scale rows 17 or 19 at midbody 8} 
Scales weakly keeled, 15 rows throughout; a distinct nuchal 
groove; back olive green, with scattered reddish brown 
spots, or with a black patch on the occiput nuchalis 
Scales distinctly keeled, 17 rows’ anteriorly; nuchal 
groove less obvious; back yellowish brown with = many 
regularly arranged small blackish spots swinhonis 
Scale rows 17 at midbody; back uniform olive green; an 
obvious nuchal groove leonardi 
Scale rows 19 at midbody 4 
Back with dark transverse markings; as bands crossing back or 
alternating on right and left sides, or as shorter bars in 
two rows 5 
Back without crossbands or bars 7 
With black transverse bands crossing back or alternating on 
right and left sides nigrocincta 
With shorter dark bars in two rows on back, each’ bar_ on 
three adjacent scale rows 6 
A distinct nuchal groove; two upper labials touch’ the eye; 
back with orange-red bars, belly grayish white, a pair of 
orange-red patches on side of neck himalayana 
No distinct nuchal groove; three upper labials touch eye; 
back with yellow bars, belly light yellow chrysarga 
Back green, interstitial skin of neck and forebody scarlet 
subminiata 
Back green or greenish yellow, black and red bars on sides 
of neck and forebody tiprina 
Sibynophis 
Ten upper labials, rarely 9 or 11; one anterior temporal, 
touching 8th upper labial colearils 
Nine upper labials, rarely 8; 2 anterior temporals, lower 
one touching 7th and 8th or 6th and 7th upper labial 2 
Ventrals 168-187, subcaudals 98-122 chinensis 
Ventrals 185-194, subcaudals 83-94 grahami 
Sinonatrix 
Maxillary teeth fewer than 29; ventrals more than 144 2 
1] 
