THE WALL-LIZARD OF GIGLIO ISLAM) 381 



plitude of variation for the three numerical characters used above 

 to be as follows : 



Number of scales across the body: 6o-79, usually (19-75. 

 « » femoral pores : 20-58 , usually 53-26. 

 » » subdigitai lamellae: 30-37, usually 31-36. 



I had previously examined a single young specimen, uniformly 

 coloured, from Giglio , and referred it to the var. serpa , Rai*. , 

 an adult specimen of which from Montecristo is preserved in the 

 British Museum collection. Considering that the var. tiliguerta 

 was supposed to be confined to Sardinia, Sicily, and Pantelleria, 

 it is highly surprising, from the position of Giglio, that the spe- 

 cimens from that island should be referable to it. And yet, the 

 high number of scales, of femoral pores, and of subdigitai lamellae, 

 the comparatively long and narrow head ( on an average ) , the 

 frequent separation of the parietal from the upper postocular, 

 together with the absolute identity in the coloration , concur to 

 prove the identity of the Giglio lizard with the Sardoan and Sici- 

 lian specimens which I have designated as var. tiliguerta, distinct 

 from the var. serpa. 



Before concluding this note, I wish to add, that, in my pre- 

 vious paper on the Wall-lizards (Tr. Zool. Soc. XX, 1913) I 

 omitted to make it clear that I hold Bonaparte' s var. sicula to be 

 a strict synonym of Rafinesque's L. serpa, whilst I am in doubt 

 whether to refer the latter author's L. sicula to L. viridis or 

 to L. muralis, var. tiliguerta. The length of Rafinesque's L. si- 

 cula, viz. 10 French inches, = 270 millim. , at any rate excludes 

 the other Sicilian form of L. muralis, which is not known to 

 exceed 220 millim. 



