Annals oe the Transvaal Museum. 
39 
14. Pupil vertical ... ... ... ... ... ... ... 15 
Pupil round ; digits narrow at tlie base, the dilatation strong and 
discoid, the distal joint strongly curved, and the claw retractile 
Lygodactylus. (G.) 
15. Digits with no rudiment of web ... ... ... ... . . 16 
The dilated digits with a slight rudiment of a web and inferiorly 
with transverse undivided lamellae ... H omopholis . (G.) 
16. Digits short, cylindrical, clawless, the skin swollen on the palmar 
surface and under the articulations, simulating pads 
Chondrodactylus (G.) 
Digits not as above... ... ... ... ... ... ... 17 
17. The distal phalanges laterally not compressed ... ... , . 18 
The distal phalanges to some extent laterally compressed : the 
distal joint long, free, rising from within the extremity of the 
digital expansion ... ... ... i Hemidactylus. (G.) 
18. Digits clawed, dilated at the apex, which is furnished inferiorly 
with two plates separated by a longitudinal groove ... 19 
Digits not as above... ... ... ... ... ... ... 20 
19. Digits not dilated at the base, the distal expansion covered above 
with scales strongly differentiated from those of the basal part 
Phyllodactylus . (G.) 
Digits dilated also at the base, the basal expansion with two 
pairs of large plates at its extremity ... ... Oedura. (G.) 
‘20. Digits with more than three transverse lamellae inferiorly ... 21 
Digits with only two enlarged scales under their extremity and a 
nail-like scale above ... ... ... ... Col opus (G.) 
21. Digits with minute and rather indistinct retractile claws ... 22 
Digits clawless, a flat nail-like scale on the extremity above, 
below with undivided angular lamellae distally 
Pachydactylus. (G.) 
"22. Dpper surfaces covered with minute granular scales 
Rlioptropus. (G.) 
Dpper surfaces covered wflth granules and tubercules of unequal 
sizes ... ... ... ... ... Elasmodactylus . (G.) 
'23. Body covered with granular scales, digits clawed; toes strongly 
fringed laterally with long pointed scales . . .Ptenopus. (G.) 
Body covered with imbricate scales ... ... "... ... 24 
24. Pupil round, head short, tongue thick, and not protractile 
Agama. (A.) 
Pupil vertical, head elongate, tongue very long, slender, and 
bifid ... ... ... ... ... ... ... Varanus (V .) 
25. The rostral takes no part in forming the nostril ... ... 26 
Nostril between the rostral and one or more labials (Scelotes 
Herpetosaura, and Sepsina) ... ... ... ... ... 8 
26. Nostril between the first labial and one or more nasals ... 27 
Labials take no part in forming the nostril ... ... ... 30 
27. Dorsal scales forming regular longitudinal and transverse series, 
squarish, or rhomboidal with osteodermal plates ... ... 28 
Dorsal scales roundish, soft, intermixed with granules 
Pseudocordylus. (Z.) 
28. No praefrontals ... ... ... ... ... ... ... 29 
Praefrontals present, tongue with imbricate scale-like papillae 
above ... ... ... ... ... Gerrhosaurus. (Gr.) 
