4 

 23. HEMIDACTTITTS. 133 



a. S- Deccan. Col. Sykes [P.]. (Type of 



H. aykesti.) 

 b-c, d. S2- Matheran. Dr. Leith [P.]. 



e-k. S ? . Salem. Col. Beddome [0.1 



l-^. S 2 ■ Tinnevelly. Col. Beddome [C.l. 



o,p.(SSc yg. Malabar. Col. Beddome [C.J. 



19. Hemidactylus triedrus. 



Hemidactylus trihedrus, Gray, Cat. p. 152. 

 Gecko triedrus, Daud. Kept. iv. p. 155, ' 



Hemidactylus triednis, Lesson, m Belang. Voy. Ind. Or. p. 311, pi. v. 



fig. 1 ; Dum. ^ Bibr. iii. p. 366, pi. xxviii. fig. 8 ; Kelaart, Prodr. 



Faun. Zeyl. p. 157 ; Gunth. Rept. Brit. Ind. p. 107 ; Stoliczka, 



Journ. As. Soc. Beng. xli. 1872, p. 93 ; Blanford, op. cit. xlviii. 



1879, p. 124. 

 (Tachybates) triedrus, Fitzing. Syat. Rept. p. 105. 



Head large, oviform ; snout longer than the distance between 

 the eye and the ear-opening, once and two fifths the diameter of the 

 orbit ; forehead concave ; ear-opening large, suboval, oblique, mea- 

 suring about half the diameter of the eye. Body and limbs moderate. 

 Digits free, moderately dilated, inner well developed ; infradigital 

 lamellae slightly oblique, six or seven under the inner digits, eight to 

 ten under the median digits. Snout covered with convex granules, 

 which may be keeled ; hinder part of head with minute granules 

 intermixed with roundish tubercles. Rostral subquadrangular, not 

 twice as broad as high, with median cleft above ; nostril pierced 

 between the rostral, the first labial, and three or four nasals ; eight 

 to ten upper and seven or eight lower labials ; mental large, trian- 

 gular or pentagonal, at least twice as long as the adjacent labials ; 

 four chin-shields, median pair largest and in contact behind the 

 mental. Upper surface of body covered with small flat granular 

 scales, and large trihedral tubercles arranged in sixteen to twenty 

 more or less irregular longitudinal series ; these tubercles vary some- 

 what in size according to specimens, but the largest never exceed 

 two fifths the diameter of the eye. Abdominal scales large, smooth, 

 rounded, imbricate. Males with a series of praeanal pores, inter- 

 rupted medially ; six to eight pores on each side. Tail rounded, feebjy 

 depressed, tapering, covered above with irregular, smaU, smooth 

 inbricated scales and rings of largo, pointed, keeled tubercles, infe- 

 riorly with a median series of transversely dilated plates. Light 

 pinkish brown above, generally with more or less defined transverse 

 darker bands bordered by pure white tubercles surrounded by deep- 

 brown rings ; young very regularly barred with dark brown, there 

 being four dark bars between head and hind limbs ; a more or less 

 defined dark-brown streak, white-edged above, on the side of the 

 head, passing through the eye ; lower surfaces white. Specimen i 

 has five white, deep-brown-edged cross bars, one just behind the 

 head, the second on scapula, two on the back, and the last on 

 sacrum. 



