SATJIMA. 799 



continued across the preanal region as in R. {Peripia) mutilatus. The tail is im- 

 perfect, but what remains of it has no enlarged sub-caudals. 



I obtained only one example of this rare Gecko at Ponsee, at an elevation of 

 3,300 feet on the Kakhyen Hills. 



Hemidactylus (Peripia) mutilatus, Weigm. 



Uemidacti/lm [Peropu^] nmUlatus, Weigm., Nov. Act. Leop., vol. xvii, 1835, p. 238; Fitzinger, Syst. 



Rept., 1843, p. 103. 

 Peropus mutilatus, Gray, Cat. Lizards, B.M.^ 1845, p. 169 j Gerard, United States Explor. Herpet., 



1858, p. 277 j Cope, Proc. Acad. Nat. Sc, Philad., 1868, p. 319; Gunther, Proc. Zool. Soc, 



1873, p. 168. 

 nemidacti/lus 77iutilatiis,T>um. h^ihv.y'Er^Qi. Genl., vol. iii, 1836, p. 354; Dum., Cat. Method. 



des Kept., 1851, p. 38. 

 Hemidacti/lus peronii,'D\mi.. k'Bihv.j'Er^ei. GgyiI., vol. iii, 1836, p. 352, pi. xxx, %. 1; Cantor, 



Journ. As. Soc, Bengal, vol. xvi, 1847, p. 628. 

 Peripia jjeronii, Gray, Cat. Lizards, B.M., 1845, p. 158; Kelaart, Prod. Fauna Zeylan. 1852, p. 187; 



Gunther, Rept. Brit. Ind., 1864; id. Ann. and Mag. Nat. Hist., vol. x, p. 422; 1872; id. 



"Brenchley^s Cruise of Curacoa,'' 1872, p. 4U7 ; p. 110; Peters, Berlin Monatsber. 1867, 



p. 14; Theobald, Journ. Linn. Soc, 1868, vol. x, p. 29; Descr. Cat. Rept. Brit. Ind. 1876, 



p. 79; Stoliczka, Journ. As. Soc, Bengal, vol. xxxix, 1870, p. 140, p. 163; id. op. cit., 1872, 



vol. xli, p. 103; Ferguson, Rept. Fauna, Ceylon, p. 12, 1877. 

 Gecko pardus, Tytler, Journ. As. Soc, Bengal, 1864, vol. xxxiii, p. 547. 

 Peripia mutilata, Stoliczka, Journ. As. Soc, Bengal, vol. xlii, 1873, p. 113. 

 Peropmpackardii, Cope, Proc. Acad. Nat. Sc, Philad., 1868, p. 319. 



This is a common Tree- Gecko at Ehamo, where in the months of Eebruary and 

 March I found it on trees; but it occurs also in the houses which are all built of 

 bamboo and teak. 



Young specimens are brown, marked with small blackish-brown spots, and with 

 smaller interspersed whitish spots. The adults are pale olive greyish-brown, with 

 hardly any trace of spots, but all the scales of the upper surface, as in the young, 

 are minutely punctulated with brownish. The colour of this lizard tends to 

 conform to the surface on which it lives, while at the same time the young are 

 more deeply coloured than the adult. I have compared these specimens with 

 examples of the species in the British Museum, both from the Isle of France and 

 Ceylon, with which they structurally agree. They have all the enlarged chin shields, 

 and the preanal pores vary from thirty-six to thirty-eight in these individuals, but 

 Theobald has observed as many as forty-two in Rangoon specimens. 



The edge of the tail is minutely serrated in all, depressed and rather flattened 

 on the under surface, with a mesial line of enlarged sub-caudals raised above the 

 level of the smaU imbricate scales external to it, and which are arranged in oblique 

 rows numbering about six scales to each row, on either side, at the base of the tail. 

 The numbers of these scales diminish from before backwards, so that at the middle 

 of the tail, and throughout the rest of its extent, they become reduced to two or three 

 in each row, the under surface of the tail being thus, in its distal half, wholly occupied 

 by the enlarged sub-caudals. In its latter half, the tail tapers rather rapidly to a 



