1895.] BATBACHIAKS FEOil .U)EX. 641 



more sparsely covered with enlarged convex granules. The 

 granules of the head are largest between the eye and the nostril. 

 A few enlarged tubercles on the radial portion of the fore limb, 

 and numerous trihedral tubercles on the hind limb, with generally 

 a few smaller tubercles at the bases of the fourth and fifth toes. 

 On the tail the tubercles are larger than those on the body, 

 acutely pointed and arranged in transverse series of six, each 

 row separated from the one in front of and behind it by about 6 

 rows of granules. Scales on the under surface of the base of the 

 tail small and imbricate, but a short way beyond the base the 

 mesial scales are transversely enlarged, and further on become 

 transverse plates. A pair of large chin-shields in contact behind 

 the pentagonal mental and broadly in contact with the first and 

 second lower labials ; a small shield external to each chin-shield and 

 in contact with the second and third labials, and a line of enlarged 

 scales below the labials. Scales on the ventral surface about one 

 fourth the size of the dorsal tubercles, cycloid and imbricate. 

 Limbs well developed, the fore limb reaching the nostril or in 

 advance of the snout ; the liind limb falls short of the axilla. 

 Digits well-developed, with bi-oad lamellas, seven to eight on the 

 pollex, eight to ten on the second to the fourth finger, and ten 

 or eleven on the fifth ; seven or eight lamellie on the hallux, nine 

 to eleven on the second, third, and fourth toes, and eleven or 

 twelve on the fifth. Tail much depressed at the base and through- 

 out its entire length, longer than the body and head, and finely 

 pointed. Femoral pores 12 to 15. 



General colour grey, with an obscure dusky band before the eye 

 and also behind it, with or without some feeble dusky markings on 

 the head, neck, and shoulders ; faint indications of dark bauds on the 

 naiddle of the tail towards the tip. Underparts white, minutely 

 spotted with livid on the sides of the belly. 



This species is distinguished from H. turdcus, Linn., by the 

 greater development of its digits, but more especially of their 

 lamellae, which by their breadth recall those of a Tarentola, The 

 greater development of its dorsal tubercles, the flattened tail, its 

 heavier form, greater size, and uniform coloration are all features 

 in which it differs from that species. Its chin-shields, also, in their 

 relations to the upper labials differ from those of H. turcicus. 



I have much pleasure in connecting Colonel Terbury's name 

 with this species. He informs me that he " saw this species once in 

 Aden about halfway up Shum-Shum. The specimen was in a 

 crevice of the rock, but it ran rapidly up the perpendicular face 

 of the precipice when I tried to catch it. It is fairly common 

 inland on the trunks of trees." 



Proc. Zool. Soc— 1895. No. XLI. 41 



