Reptilia. 51 



EEPTILIA. 



By G. A. BouLENGEE, F.K.S. 



(PLATE VII.) 



The first collection made on Christmas Island by tlie officers of 

 H.M.S. ** Flying Pish." yielded examples of three species — 

 GymnodactyluB marmoratus, Kuhl, Lygosoma natkitatis (n sp.), and 

 Typhlops exocoeti (n.sp.). Mr. Lister's visit to the island in 1888 

 resulted in the discovery of two further new species — Gecho listeri 

 ^nd Ablepharus egerice. To these five species Mr. Andrews has 

 .added a sixth, the widely distributed Lygosoma atrocostatum. 



LACERTILIA. 

 Family GECKO]S"ID^. 

 1. Gymnodactylus marmoratus, Kuhl. 



-Gymnodactylm marmoratus, Boulenger, Cat. Liz., i, p. 44 (1885). 



Known from Java, Sumatra, and Borneo; also from the mountains 

 -of Perak, in the Malay Peninsula, whence I have recently received 

 a specimen. 



2. Gecko listeri. (PL VII, Fig. 1.) 



• Gcclco listeri, Boulenger, P.Z.S., 1888, p. 535. 



Head moderate, snout once and one-third the diameter of the 

 orbit, which equals its distance from the very small round ear- 

 opening ; forehead scarcely concave. Head covered with small 

 granules, which are considerably larger on the snout; rostral 

 quadrangular, more than twice as broad as deep, without cleft ; 

 nostril pierced between the rostral, the first labial, and three 

 nasals ; twelve upper and ten lower labials ; three transverse rows 

 of small hexagonal chin- shields. Dorsal scales uniform, minutely 

 granular ; ventrals much larger, roundish hexagonal, subimbricate. 

 Digits with a very slight rudiment of web ; seven or eight 

 angularly curved lamellae under the median toes. A short angular 

 series of twelve praeanal pores. Tail cylindrical, covered with 

 uniform small flat scales, which are largest inf eriorly. Pale grey- 

 brown above, with a few rather indistinct brown spots and 

 scattered white dots ; a brown streak from the nostril to the eye ; 

 lower parts white, with small brown spots. 



Totallength 79 ram. Fore limb 12 mm. 



Head 12 ,, Hind limb 15 ,, 



Width of head ... 8-5 „ Tail 38 ,, 



Body '. 29 „ 



