Reptdia. 51 



EEPTILIA. 



By G. A. BouLExNGEK, F.ll.S. 



(PLATE YII.) 



'The first collection made on Cliristmas Island by the officers of 

 H.ll. S. "Flying Fish" yielded examples of three species — 

 Gymnodactylus marmoratus, Kuhl, Lygosonia naticitatis (n sp.), and 

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

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

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

 .added a sixth, the widely distributed Lygosonia atrocostatam. 



LACERTILIA. 



Family GECKOXID^. 

 1. Gymnodactylus marmoratus, Kuhl. 



■Gymuodactijhix uiannoratuK, Boiilenger, 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. (PI. VII, Fig. 1.) 



 Gecko Ustcrl, Bouleuger, 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 arc 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; vcntrals much larger, roundish hexagonal, subimbricate. 

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

 angularly curved lamellaj under the median toes. A short angular 

 series of twelve prreanal 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. 



Total length 79 mm. Fore limb 12 mm. 



Head 12 ,, Ilindlimb 15 ,, 



Width of head ... 8-5 „ Tail 38 ,, 



Body 29 „ 



