THE SOLID-TOOTHED SNAKES. 87 
Ventrals with distinct lateral keels. Two labials 
entering the eye; usually two superposed 
anterior temporals ; sub-caudals 114-140 .. Chlorophis natalensis. 
Ventrals with distinct lateral keels. Three labials 
entering the eye; sub-caudals 94-133 .. Chlorophis irregularis. 
I. CHLOROPHIS HOPLOGASTER. Green Water Snake. Groen Water 
Slang. 
ES aoiynis heafilia hopolgaster ; Chlorophis oldhami; Pithothamnus 
hoplogaster. 
Colour—Uniform bright green, sometimes with an olive tinge above 
greenish-yellow on the underparts. 
Average length—3 feet. 
Distribution—Cape Colony; O. R. C., Transvaal; Natal; Zululand ; 
Rhodesia ; East and Central Africa. 
2. CHLOROPHIS NEGLECTUS. East African Green Snake. 
Synonyms—Pithothamnus neglectus ; Ahetulla neglecta. 
Colour—Green above; greenish-yellow beneath. Some specimens have 
purplish-brown blotches on the anterior part of the body. 
Average length—3 feet. 
Distribution—Southern Rhodesia; East Africa; British Central; 
Africa. 
3. CHLOROPHIS NATALENSIS. Natal Green Snake. Natalsche Groen 
Slang. 
Synonyms—Dendrophis natalensis ; Philothamnus natalensis. 
Colour—Olive-green above, usually some of the scales with a white spot 
on the outer border, and the skin between the scales black ; 
greenish white below. 
Average length—3 feet. 
Distribution—Generally distributed over South Africa ; North to Central 
Africa. 
4. CHLOROPHIS IRREGULARIS. Northern Green Snake. Noordelijke Groen 
Slang. 
Synonyms—Coluber irregularis ; Philothamnus irregularis ; Philotham- 
nus guentheri. 
Colour—Green or olive above, scales often with a white spot at the 
base, with or without a black upper border; skin between the 
scales black ; sometimes with black spots or irregular cross-bands 
on the anterior part of the body ; greenish-yellow below. 
Average length—3 feet. 
Distribution—Southern Rhodesia ; North to Tropical Africa. 
Genus PHILOTHAMNUS. 
A single Species in South Africa. 
KEY-~ TO: RHE SPECIES. 
Scales in 15 rows. Ventrals 169-207, anal 
divided. Sub-caudals keeled and 
notched ie ae Be Philothamnus semivariegatus. 
I, PHILOTHAMNUS SEMIVARIEGATUS. Bush Snake. JBosch Slang. 
Synonyms—Philothamnus punctatus ; Dendrophis semivariegatus ; Abe- 
tulla bocagii ; Leptophis punctatus. 
Colour—Green or olive above, with or without black spots or cross-bars ; 
greenish-yellow below. 
