Annals of the Transvaal Museum. 
48 
34. Prseocular not extending to the upper surface of the head. 
Boodon infernalis Guenther. 
Prasocular extending to the upper surface of the head ... 35 
35. Scales in 23 rows. Boodon guttatus (Smith). 
Scales in 25 to 31 rows ... ... ... ••• ... 36 
36. Two pairs of chin-shields in contact on the median line. 
Boodon lineatus Bum. S) Bibr. 
Only one pair of chin-shields in contact on the median line. 
Boodon mentali s Guenther. 
37. A single pair of chin-shields. Lamprophis fiskei. Boulenger. 
Two pairs of chin-shields ... 
38. Loreal only a little longer than deep 
Loreal two or three times as long as deep. 
Lamprophis inornatus. Bum. cf Bib. 
39. Scales in 19 rows, 7 upper labials. 
Lamprophis fuscus Boulenger . 
Scales in 23 rows, 8 upper labials. Lamprophis aurora (L.) 
40. Scales without apical pits ... ... ... 
Scales with apical pits 
41. Two pairs of chin-shields ... 
Three or four pairs of chin-shields. 
Leptodira hotamboeia ( Lnur .) 
42. Nostril between two nasals, two labials entering the eye. 
Ablabophis rufulus ( licht .) 
Nostril in a single nasal followed by a small post-nasal, three 
labials entering the eye. Lycophidium capense (Smith). 
43. Scales in 17 rows 
Scales in 1 5 rows 
44. Nostrils between two or three shields 
Nostril in a semi-divided nasal 
38 
39 
39 
41 
42 
44 
46 
63 
45 
45 . 
46. 
47. 
48. 
49. 
50 . 
53. 
54. 
Less than 150 ventrals, with apical pits. 
Amplorliinus multimaculatus Smith. 
More than 150 ventrals, no apical pits. 
Grayia lubrica Sclater. 
Nasal not in contact with prasocular, usually two postoculars ... 
Nasal in contact with prseocular. one postocular. 
More than 115 ventrals. 
Less than 110 ventrals. 
Pupil round 
Pupil vertical or horizontal 
Pupil vertical. 
Pupil horizontal. 
Scales in 27 or more rows. 
Scales in less than 27 rows 
Scales in 19 to 21 rows 
Scales in 17 or less rows ... 
Ventrals 131 to 149, scales not oblique. 
Tropidonotus olivaceus (Peters). 
Ventrals 164 to 201, scales very oblique. 
Dispholidus typus (Smith). 
Scales in 17 rows 
Scales in 1 5 rows 
Temporals 1 & 1, or 1 & 2... 
Temporals 2 & 2, or 2 & 3 
Homalosoma shiranum Guenther. 
Homalosoma lutrix (X.) 
Homalosoma variegatum Peters. 
Tarbophis semiannulatus (Smith). 
Theltornis kirtlandi (Hallow.) 
Pseudaspis cana ( L .) 
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50 
49 
51 
53 
55 
54 
25 
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