1883^] GECKOS OK NEW CALEDONIA. 125 



Brussels Museum, the other in the Lisbon Museum) and a young (in 

 the British Museum). 



8. Rhacodactylus aubryanus. 



*Rhacodactylus aubry units, Bocage, Jorn. Sc. Lisb. iv. p. 202, 

 and 1881, p. 127. 



Agrees in every respect with the preceding, except in having the 

 upper surface of the head covered with minute granules, not larger 

 than those covering the back. From snout to vent 195 millim. 



I have examined the unique specimen of this form, belonging to 

 the Lisbon Museum, and, in spite of its very great resemblance to 

 a. leachianus, believe it to deserve, at least till vie get other specimens 

 for comparison, specific distinction. 



9. Rhacodactylus ciiahoua. (Plate XXL figs. 1, la, 16, 

 1 c, 1 d.) 



* Platydactylus chahoua, Bavay, Cat. p. 3. 



General proportions of R. trachyrhynchus. Head oviform ; snout 

 longer than the distance between the orbit and the ear-opening 

 snout once and a half the diameter of the orbit ; forehead concave 

 ear-opening narrow, horizontal. Body and limbs moderately 

 elongate, not much depressed ; digits broadly dilated, not very 

 unequal, their border very distinctly denticulated (as in R. ciliatus), 

 half-webbed ; the web very short (though distinct) between the two 

 outer toes ; limbs bordered by cutaneous folds, most developed on 

 the anterior side of the fore limbs and on the posterior side of the 

 hind limbs ; other cutaneous folds below the rami mandibulfe, on 

 the sides of the neck, and from axilla to groin ; the latter feeble ; 

 throat with irregular cross folds. Upper surfaces covered with 

 very small equal granular scales, scarcely larger on the snout ; 

 gular scales minute, granular ; abdominal scales very small, flat, 

 juxtaposed. Rostral twice as broad as high ; nostril pierced between 

 the rostral, the first upper labial, and six or seven small nasals; 

 thirteen or fourteen upper and twelve or thirteen lower labials ; 

 mental elongate wedge-shaped, as long as the adjacent labials, which 

 it separates ; no regular chin-shields, but a few larger scales passing 

 gradually into the minute grannies of the throat. Male with three 

 short series of femoral pores on each side ; these do not extend be- 

 yond the inner half of the thighs, and are separated from the corre- 



16 



sponding series on the other side ; I count is pores on each side, 



5 or 6 



there being, besides, one or two pores indicating a fourth series ; alto- 

 gether 79 pores. Grey above ; whitish beneath, marbled with grey, 

 forming transverse bars on the belly. 



millim. 

 Total length (tail rudimentary) . . 140 



Head '. . . . 33 



Width of head 22 



Body 91 



Fore limb 38 



Hind limb 51 



