124 MR. G. A. BOULENGER ON THE [Mar. 6, 



B. Digits not more than one-third webbed. 



Upper surface of head covered with very large 



unequal, subconical tubercles 4. traohyrhynchus. 



Hinder part of the head with knob-like prom- 

 inences 5. Miriculatus. 



II. A ciliated crest on each side, from the upper 



eyelid to the back fi. ciliatus. 



7. Rhacodactylus leachianus. 



Platydactylus leachianus, Cuv. R. A., 2nd edit. ii. p. 54 ; Dum. 

 & Bibr. iii. p. 3 '5, pi. 28 f. 6 ; Gray, Cat. Liz. p. 160 ; * Bavay, 

 Cat. p. 3. 



Hoplodactglus {Rhacodactylus) leachianus, Fitzing. Syst. Rept. 

 p. 100. 



* Rhacodactylus leachianus. Socage, Jorn. Sc. Lisb. iv. p. 201. 

 Head large, ovilorm, elongate ; forehead concave ; snout longer 

 than the distance between the orbit and the ear-opening, a little 

 more than twice the diameter of the orbit; ear-opening narrow, 

 horizontal. Body and limbs moderately elon2;ate, rather depressed ; 

 digits moderately elongate, broad, not very unequal, half-webbed ; 

 limbs bordered on each side by cutaneous folds, most developed on 

 the anterior side of the fore limbs and on the })Osterior side of the 

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

 sides of the neck, and from axilla to groin ; throat with a iev! cross 

 folds. Upper surface of head covered with small iriegular polygonal 

 convex scales larger than the granules of the back, elongated and 

 more or less distinctly keeled on the forehead and snout ; rostral 

 twice as broad as high, with a more or less distinct median division 

 above ; nostril ))ierced between seven or eight small nasals and the 

 first upper labial; upper labials 17 or 18 ; lower labials 14 to 17, 

 anterior very high ; mental narrow, elongate wedge-shaped, about 

 the size of the proximal labials ; no regular chin-shields, but a fem 

 larger scales passing gradually into the minute granules of the throat. 

 S."ales small, granular. i=mallest on the lower surfaces. [Males with 

 a large patch of prseanal pores\] Tail cylindrical, tapering, covered 

 with uniform, small, flat, justajjosed scales arranged in verticils. 

 Grey or pinkish-grey above dotted and indistinctly marbled with 

 brown, sometimps with large whitish spots ; lower surfaces white, 

 uniform. 



milhm. 



Total length 325 



Head 59 



Width of head 46 



Bodv 152 



Fore limb 70 



Hind limb 84 



Tail 115 



The largest species of the family Geckonida at present known. 

 This description is taken from two female specimens (one in the 



1 Dum. & Bibr. /. c. 



