GEHYBA OCEAN ICA. 273 



Srs.Gfhyra, GRAY, Proc. Zool. Soc. Lond. II, 1834, 100; Zool. Misc. 1842, 57; 

 &, Catal. Lizz. Brit. Mas. 1845, 162. 



Perodactylus, FITZ. Svst. Kept. 1843, 103. 



OBSERV. In this genus, the scales which cover the dorsal region 

 are quite small, granular, and uniform, giving to that region a smooth 

 appearance. Upon the abdomen, they are larger than on the back, 

 and assume again the shape of genuine scales. The latter are smooth, 

 that is, not carinated. The pupil is vertically elliptical, so far as our 

 observations go. The last phalanx is slender, compressed, and curved, 

 terminated by a curved nail, and inserted above the expanded portion 

 of the digits. The thumbs are clawless. 



1. GEHYRA OCEANICA, Gray. 



SPEC. CHAR. Digits rather elongated. Dorsal scales minute and 

 uniform. Abdominal scales subquadrangular on the middle of the 

 belly. Reddish-brown above, spotted with white ; whitish beneath. 



SYS. Gecko oceamcus, LESS. Voy. Coq. Zool. II, I, 1830, 42. PI. n, fig. 3. 



Gehyra paciftca, GRAY, Proc. Zool. Soc. Lond. II, 1834, 100. 



Gehyra oceanica, GRAY, Zool. Misc. 1842, 58 ; &, Catal. Lisz. Brit. Mas. 1845, 

 163. 



Naultinus pnciftcus, GRAY, Zool. Misc. 1842, 58; Catal. Lizz. Brit. Mas. 1845, 169. 



Gehyra yulnris, GRAY, MSS. Brit. Mus. 



Hemidactylus ouatensi*, Dmi. & BIBR. Erpet. gen. Ill, 1836, 350. PI. xxvnr, 

 fig. 7. 



Perodactylus oualensis, FITZ. Syst. Kept. 1843, 103. 



OBSERV. The upper labials are smaller than the lower, and the 

 rostral is larger than the symphyseal. We observe as many as twelve 

 upper, and twelve lower labials ; the upper ones, diminishing gradu- 

 ally in size, from the rostral to the angle of the mouth ; the third and 

 fourth lower labials are the largest ; the first is nearly equal to the 

 fifth ; the remaining ones diminish posteriorly. There are four pairs 

 of mental shields ; the middle pair being the longest, and the only one 

 conspicuously developed. Many small plates may be observed beneath 

 the lower labials, contrasting with the exceedingly minute granules 

 which cover the region of the throat. The granules of the upper sur- 



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