186 GECKONID^. 



of the orbit ; forehead concave ; ear-opeuing oval, vertical or slightly 

 oblique, its greatest diameter half that of the orbit. Body and limbs 

 elongate ; digits with a rudiment of web. Head covered with 

 granular scales, larger than the granules of the back ; nostril pierced 

 between the rostral and the first labial ; twelve to fourteen upper 

 labials ; ten to twelve lower labials ; mental small, subtriangular ; 

 no chin-shields, the chin covered with small irregular polygonal 

 scales. Back covered with very small juxtaposed flat gianules 

 intermixed with larger lentiform smooth tubercles ; these are very 

 numerous and irregularly arranged. Throat covered with very small 

 granules intermixed with larger ones ; abdominal scales moderately 

 large. Femoral pores in a long series, angular on the praeanal region ; 

 the number varies from twenty-five to twenty-nine on each side. 

 Tail slender, subcylindrical, very distinctly annulate, covered above 

 with very small flat granular scales intermixed with round flat 

 tubercles, inferiorly with tessellated scales ; each annulus is composed 

 of twelve to fourteen transverse rows of scales above, four or five 

 beneath. Upper surfaces fulvous ; a whitish, dark-edged vertebral 

 line, forked on the neck, extending to each eye ; tail with distant 

 whitish annuli ; lower surfaces whitish. 



Total length 261 millim. 



Head 32 „ 



Width of head 24 „ 



Body 96 „ 



Fore limb 41 „ 



Hind limb 57 „ 



Tail 133 „ 



Moluccas ; New Guinea ; Solomon Islands. 



a. (^ . Amboyna. 



b,c. (S 2- N. Ceram. 



d. 2- Mysol. 



e-f. cf . Faro Island, Solomon Group. H. B. Guppy, Esq. [P.]. 



g, Yg. ? College of Surgeons. 



Var. bivittatus. 



Gecko bivittatus, Graj/, Cat. p. 162. 

 Platydactylus bivittatus, Dum. ^- Bibr. iii. p. 334. 



(Scelotretus) bivittatus, Fitzing. Syst. Rept. p. 101. 



Gecko trachylsemus, Peters, Mon. Berl. Ac. 1872, p. 774. 



Messrs. Peters and Doria, who have examined a very great number 

 of this and the preceding form, have come to the conclusion that 

 the diflferences between them are not sufficiently important nor 

 sufficiently constant to warrant specific distinction. These differences 

 are: — Tubercles larger, less numerous, mamilliform, or feebly keeled ; 

 femoral pores generally fewer (ten to twenty-one on each side) ; each 

 caudal annulus composed of ten to twelve transverse rows of scales 

 above, three or four inferiorly. (Jreyish or reddish brown above, 

 variegated with darker j a more or less distinct, lighter vertebral 



