THE SOLID-TOOTHED SNAKES. 81 
SuB-FAMILY COLUBRIN. 
SYNOPSIS OF THE SOUTH AFRICAN GENERA, 
This sub-family ave without grooved fangs in the upper jaw. Their teeth 
ave quite solid. No trace of poison glands. 
1. GENUS TROPIDONOTUS.—Scales smooth in 19 rows. Pupil round ; 
posterior maxillary teeth longest; internasal not entering the 
nostril ; snout rounded. 
2. GENUS PsEuUDASPIS.—Scales smooth in 27 to 31 rows; internasal 
entering the nostril; snout with vertical sides, more or less 
prominent. Pupil round. Posterior maxillary teeth longest. 
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Fic. 36.—Skull and teeth of a typical snake of the non-venomous division 
(Aglypha). i ; ‘ } 
1. Skull showing the teeth in both jaws, all of which are without grooves. 
2. Top of the skull and lower jaw (C). 
3. View of roof of mouth showing the two rows of upper teeth. 
(A.) Maxillary teeth. (B.) Palatine teeth. (Brit. Mus. Cat. Snakes.) 
3. GENUS ABLABOPHIS.—Scales smooth, in 19 rows; Pupil vertically 
elliptic ; anal entire. Frontal at least once and a half as long 
as broad ; maxillary teeth equal. 
. GENus Lampropuis.—Scales smooth, in 19 to 23 rows; frontal broad 
and short ; posterior maxillary teeth shortest ; Pupil vertically 
elliptic or sub-elliptic. Anal entire. 
5. GeENus Boopon.—Scales smooth in 23 to 33 rows, with apical pits ; 
anterior maxillary teeth strongly enlarged. Vertically elliptic 
pupil. 18 to 24 maxillary teeth. 
6. GENUS LyCoPHIDIUM.—Scales smooth, with apical pits in 15 or 17 
rows. Tail short (sub-caudals not more than 50 pairs). Pupil 
vertically elliptic ; rostral small ; anterior maxillary teeth longest. 
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