SAURIA. 41 



Hemidactyli, 



The base of the toes is furnished with an oval disk formed beneath 

 by a double row of scales, en chevron; from the middle of this disk 

 rises the second phalanx, which is slender, and has the third or the 

 nail at its extremity. The species known have five nails, and a 

 series of pores on each side of the anus. The sub-caudul scales form 

 broad bands like those on the belly of Serpents. 



There is one species in the south of Europe, O. verrucidatus., 

 Nob., of a reddish grey; the back covered with little conical 

 tubercles, somewhat rounded; circles of similar tubercles round 

 the tail; found in Italy, Sicily and Provence like the G.fasci- 

 cularis. 



A very similar species, G. ?H<//n/m, Nob. , with still smaller 

 tubercles, those of the tail more pointed; grey, clouded with 

 brown; brown rings on the tail, abounds throughout the hot 

 portions of America, where it enters the houses. It is known 

 in the French colonies by the name of iMaboida dcs murailles.(\) 

 There are others at Pondicherry and Bengal so very similar 

 that we are almost induced to believe that they have been carried 

 there in vessels. (2) 



A Hemidactylus with a bordered body, G. marginatus^ Nob, 

 is also found in India; its feet are not palmated; the tail is hori- 

 zontally flattened, and its edges are trenchant and somewhat 

 ciliated. It was sent from Bengal by M. Duvaucel. 

 In the third division of the Geckos, which I will call 



TlIECADACTYLI, 



The toes are widened throughout, and furnished beneath with 

 transverse scales; but these scales are divided by a deep longitudinal 

 furrow, in which the nail can be completely concealed. 



In those species which are known to me the nails are deficient on 

 the thumbs only; the femoral pores are wanting, and their tail is 

 covered above and beneath with small scales.^ 



G. Isevis, D.; Stcllio pcrfoliatus, Schn.^ Lac. ra^ioandd, Gm. ; 

 Le Gecko lissc, Daud. IV, li. Known in the F.rench colonics as 

 the Alabouia dcs bananiers. Grey, marbl|i^l- .with brown; finely 



, ■^ >,. ... -1 



(1) So far as wc can judge from the figure, the Theciidacti/fits policaris and the 

 Gecko acukaUis, Spix, XVllI, 2 anil 3, 5Q^m to be different ages of this Mabouia dcs 

 piuraillcit. MAI. de Joniu\s h:is glvon :i nionogiMi>h of thoni, but ho confounds it 

 with different sjiocies. 



(2) To tliis division, also belong tbc (i.,'i tuliorulcs triains and the G. <i (jtitus 

 ^pincusc of Daud. ; the first is identical with die ShlL m^itri/anttsts of Schn. The 

 Stcll. p!ti{yunt,% Schn. is also ejosely siUicd-'to it. 



Vol. II.— F . ' ' ' 



