Annals of the Transvaal Museum. 
103 
Key to the Species of Tetrad act ylus. 
A. — Limbs pentadactyle. 
(a) Dorsal scales of head ribbed, of tail keeled, 9-12 femoral pores. 
T. seps, Linn. 
(b) Dorsal scales of head and of greater portion of tail, except 
near the tip, quite smooth : 7 femoral pores. 
T . laevicamda, sp. nov. 
13.— Lvmhs tetradactyle . 
(c) 4 or 5 femoral pores T. tetradaciyUus, La cep. 
C. — Anterior limb ivitli 3 clawed digits , hindlimb with 2 claived digits. 
(d) 3 femoral pores. T. eastwoodae, Hewitt and Methuen. 
D. — Anterior limb with 2 claived digits, hindlimb undivided and 
without claws. ■ 
( e ) 2 femoral pores. T . breyeri, Koux. 
E. - — Anterior limb minute , posterior limb small and undivided. 
(/) 2 or 3 femoral pores. T . africanus, Gray. 
E. — Anterior limb quite absent, posterior limb small and undivided, 
(g) 2 or 3 femoral pores. T. fitzsimonsi, sp. nov. 
