Reptilia. 51 



EEPTILIA. 



By a. A. BouLEXGEK, F.R.S. 



(PLATE YII.) 



The first collection made on Cliristmas Island by the officers of 

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

 Gt/mnodactylus mnrmoratus, Kuhl, Lijgosoma nativitafis (n sp.), and 

 Ti/pJtlops cxocceti (n.sp.). Mr. Lister's visit to the island in 1888 

 resnlted in the discovery of two further new species — Geclco lister i 

 and Ahlepharus egerite. To these five species Mr. Andrews has 

 .added a sixth, the widely distributed Lygosoma atrocostatum. 



LACERTILIA. 



Family GECKONID.E. 



1. Gymnodactylus marmoratus, Kuhl. 



■Gynniiiihictjfliix tiiiiniioirrt/i.<:, Bouleng'er, Cat. Liz., i, p. 41 (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 listen. (PL VII, Fi-. 1.) 



GrcAo listen, Bouleuger, P.Z.S., 1888, p. 535. 



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

 orbit, Avhich equals its distance from the very small round car- 

 opening' ; forehead scarcely concave. Head covered with small 

 granules, which arc considerably larger on the snout ; rostral 

 quadrangiilar, more than twice as broad as deep, Avithout 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 ; vcntrals much larger, roundish hexagonal, subimbricate. 

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

 angularly curved lamellfe under the median toes. A short angular 

 series of twelve pra^anal pores. Tail cylindrical, covered with 

 uniform small flat scales, which are largest inferiorly. 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. 



Totalleugth 79 mm. Fore limb 12 mm. 



Head 12 ,, Hind limb 15 ,, 



Width of head ... 8-5 „ Tail 38 ,, 



Body 29 „ 



