324 THE ZOOLOGIST. 



variable as its congeners of Malta. Individuals entirely black, 

 which are the rarest, have the flanks of a beautiful cobalt blue ; 

 the more common sorts have green, yellow, or yellowish green 

 spots on the back, and in these the flanks are of a cerulean blue. 

 The under parts are, in some, of a leaden grey; in others, 

 yellowish ; in others, a vivid light red or reddish brown ; in 

 some, again, the flanks and cheeks are of a delicate pea-green. 



A very striking character in these Lizards is their remark- 

 able tamehess, which makes them so suitable for keeping in 

 vivaria ; I have never succeeded, however, in making them breed 

 in captivity. 



The Filfolas are known amongst English people by the name 

 of Maltese Blue Lizards, owing perhaps to the blue on the flanks, 

 which amount of colour is, in my opinion, not enough to justify 

 such a name. 



The majority of the Maltese believe that the Filfolas have a 

 double tail ; in fact, when they speak of Filfola, they state that 

 the Lizards there, which they also know to be peculiar to that 

 rock, possess a pair of tails, without saying anything of the 

 special colour and dimensions. This belief is, of course, quite 

 incorrect. A freak individual can be found at times ; these 

 freaks, however, can be met with also amongst the common 

 Lizards, and the doubling of the tail can be also brought about 

 artificially. 



The St. Paul's Islands Lizard. — This form inhabits the islets 

 at the mouth of St. Paul's Bay, and was noticed by me in 

 1913.* It is identical with the typical Wall-Lizard in nearly 

 every respect, having as a peculiarity only some black spots 

 on the under parts, which spots are not found in the common 

 Lizards, and seem to be also wanting in young individuals 

 of the present form ; at least, among hundreds of young 

 individuals I examined, I did not find one with any sign of 

 black. 



The Fungus Bock Lizard. — This most interesting form was 

 discovered by Dr. Giovanni Gulia in 1914 on the Fungus or 

 General's Bock, a steep little islet, only a few yards distant from 

 the western coast of Gozo, and just at the mouth of the inlet 



* Dr. J. De Bedriaga has told Hie of the existence in our islands of a 

 Lizard with spotted under parts ; its habitat, however, was not known. 



