Acantliodactylna. \\\ 



Synopsis of the Varieties. 

 I. Snout about U length of postocular part of head. 



A. Usually 5 upper labials to below centre of eye 



Scales smooth or feebly keeled, rarely strongly keeled, 60 to 80 



(usually 05 to 75) across middle of body; ventral plates 14 



(rarely 12 or 16) in the longest transverse series ; hind limb 



rarely reaching the eye ; 21 to 26 lamella under the fourth too 



<a, 1 i 1 , , , Forma typira. 



Scales strongly keeled, 65 to 80 across middle of body ; ventral 

 plates 16 in the longest transverse series ; hind limb reaching 

 the eye, or between the ear and the eye (males) ; 25 to 30 

 lamella? under the fourth toe ' v , ■ t^, 



e 1 , , , , , * '^1'- lonqtves, Blo-r. 



Scales strongly keeled, 50 to 59 across middle of body • ventral " 

 plates 14 (rarely 12) in the longest transverse series • hind 

 hmb not reaching beyond the ear ; 20 to 26 lamellae under 

 the fourth toe ^r 



„ „ , ■ ■ ' ■ V ar. ai((?ou/m;, Blgr. 



B. Usually 4 upper labials to below centre of eye 



Scales strongly keeled, 42 to 58 (usually 46 to 55) across middle 

 of body; ventral plates 14 (rarely 12) in the longest trans- 

 verse series; hind limb not reaching the ear; 19 to '>3 



lamellae under the fourth toe v~ 



II Q„ .,,,,,, „ • Var. aHcews, Gthr. 



II. Snout not U length of postocular part of head; scales strongly keeled • 

 usually 5 or 6 upper labials to below centre of eye ; 18 to 25 lamelte under 

 the fourth toe. 

 40 to 65 (usually 46 to 58) scales across middle of bo.ly • ventral 



plates 14 (rarely 12 or 16) in the longest transverse series; 



foot 14 to H length of head ; 16 to 25 (usually 17 to 23) 



femoral pores on each side v.., • 



Q»7 <-„ re / n ,„ , ■ ' ■ *^i- mornatiis. Gray. 



37 to 55 (u.sually 39 to 48) scales across middle of b„dy • ventral 



plates 12 (rarely 10 or 14) in the longest transverse series- 

 foot H to li length of head ; 12 to 20 (usually 14 to 18) 



femoral pores on each side V-^r. dumeriU,M.-Ed^. 



Taken in the wide sense, A. scntellatus shows an enormous range of 

 vanat.on m the number of scales and plates, viz. : scales across body 

 37-8U; longitudinal series of ventrals, 10-16; transverse series of 

 ventrals, 27-38; collar-plates, 7-15; gular scales, 20-42- femoral 

 pores, 12-29 ; lamellae under fourth toe, 18-30. 



11. ACANTHODACTYLUS FEASEEI. 



Acantlwdadylus fraseri, Bouleng. Journ. Bomb. N. H Soc xxv 

 iyi8, p. 373, and Bull. Soc. Zool. France, 1918, p. 148. 



Habit rather slender, body moderately depressed. Head U to U 

 tunes as long as broad, its length 3-t or 4 times m length to vent its 

 depth equal to the distance between the centre of the eye and the 

 tympanum ; a lanceolate concavity from the frontonasal to "the middle 



