DIVISION OPISTHOGLYPHA. Ig 
eye minute, with round pupil; nostril in a divided or semi- 
divided nasal; no loreal; no preocular; no anterior temporal. 
Body cylindrical. Scales smooth, without pits, in 17 or 19 
rows. Ventrals rounded. Tail very short, obtuse; sub- 
caudals in two rows. 
GENus MacreELaps.—Maxillary short, with 4 moderately large teeth, 
followed by a very large grooved fang situated ‘below the eye ; 
anterior mandibular teeth enlarged, third to fifth longest. Head 
small, not distinct from neck; eye minute with round pupil ; 
nasal divided; no loreal; no preocular; prefrontal entering 
the eye. Body cylindrical; scales smooth, without pits, in 
25 or 27 rows; ventrals rounded. Tail short ; sub-caudals 
single. 
GENUS APARALLACTUS.—Maxillary short, with 6 to g small teeth 
followed by a large grooved fang situated below the eye; 
anterior mandibular teeth longest. Head small not distinct 
from neck ; eye small, with round pupil ; nasal entire or divided 
no loreal. Body cylindrical; scales smooth, without pits, in 
I5 rows; ventrals rounded. Tail moderate or short; sub- 
caudals single. 
Genus PYTHONODIPSAS. 
This Genus is represented by a single Species. 
(For Scientific Description, see Synopsis of Genera of the Dipsadomorphine.) 
1. PYTHONODIPSAS CARINATA.—Keeled Snake: Driekant Slang. (Kiel 
Slang.) 
peice nat caioured or pale buff above, with a double alternating 
series of square grey spots, a few of which may coalesce to form 
transverse bars; lips with vertical grey bars; lower parts 
white. 
Average length—Two feet. 
Distribution—Damaraland ; Zambesi Regions. 
Genus TARBOPHIS. 
A single Species in South Africa. 
KEY STO) THiP SSPE CIES: 
Scales in 19 rows; anal divided. Three labials 
entering the eye. Ventrals 206-242 .. Tarbophis semiannulatus. 
I. TARBOPHIS SEMIANNULATUS. TigerSnake. Tijger Slang. (Tier Slang.) 
Synonyms—Telescopus semiannulatus. 
Colour—Yellowish or pale brown above, with 24 to 34 dark brown 
or blackish transverse rhomboidal spots or cross-bars on the 
body ; head without any spots or markings; yellowish-white 
beneath. 
Average length—2z feet 6 inches. 
Distribution—Natal ; Basutoland ; Orange River Colony ; Transvaal ; 
Delagoa Bay; Portuguese East Africa; Central and East 
Africa. 
