Acantkodactylus. 



75- 



Var. siyinicauda. 

 $ Arba Tahtani, Prov. Oraii (type) 56 



A. ijardalis is iutermediate between the two extreme species of 

 this genus, A. vulgaris and A. scuteUatus. 



Synopsis of the Varieties. 



I. Hind limb rarely reaching- a little beyond the collar ; fourth toe, from the 

 base of the fifth, not or but a trifle longer than the head : keels on sides of 

 tail, at the base, not remarkably strong-. 



A. Snout obtusely pointed, not longer than postocular part of head. 



52 to 68 scales across middle of body, dorsals smooth or very 

 feebly keeled ; ventrals in 12 (rarely 14) longitudinal and 27 



to 34 transverse series Forma typica. 



53 to 65 scales across middle of body, dorsals smooth or very 

 feebly keeled; ventrals in 14 (rarely 12 or 16) longitudinal 



and 31 to 36 transverse series Var. bedriagse, Lat. 



