AcanfJiodactylus. Ill 



Synopsis of the Varieties. 



I. Snout about 1^ 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 65 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 lamelliE under the fourth toe 



Forma typica. 



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 

 lamellae under the fourth toe . Var. longipes, Blgr. 



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

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

 limb not reaching beyond the ear ; 20 to 26 lamella under 

 the fourth toe . . Var. andouini, 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 23 

 lamellae under the fourth toe Tar. aureus, Gthr. 



II. Snout not 1^ length of postocular part of head ; scales strongly keeled ; 

 usually 5 or 6 vipper labials to below centre of eye ; 18 to 25 lamellae under 

 the fourth toe. 



40 to 65 (usually 46 to 58) scales across middle of body ; ventral 

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

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

 femoral pores on each side Var. inornaius, Gray. 



37 to 55 (usually 39 to 48) scales across middle of body ; ventral 

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

 foot 11 to 14 length of head ; 12 to 20 (usually 14 to 18) 

 femoral pores on each side . Var. dumerili, M.-Edw. 



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

 variation in the number of scales and plates, viz. . scales across body, 

 37-80 ; longitudinal series of ventrals, 10-16 ; transverse series of 

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

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



11. ACANTHODACTTLTJS FEASEEI. 



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

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



Habit rather slender, body moderately depressed. Head 1^ to If 

 times as long as broad, its length 3^ or 4 times in 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 



