Lacerta. 



3:il 



9 G-reat Salvage . 

 (^ Graciosa, Azoz'e.s 



„ Orotava, Teneriffe . 

 Columns as on p. 326. 



Habitat. — Madeira, Porto Santo, and neighbouring islets ; also 

 found in the Azores, on the island of Graciosa, where it is said to have 

 been introduced in the last century. Dumeril and Bibron reported 

 this lizai'd from Teneriffe and a young specimen was obtained on that 

 island by the Challenger Expedition ; the British Museum possesses 

 besides a specimen stated to be from Orotava. 



Although not unlike L. danfordii in many respects, I do not think 

 this species bears any special aflfinity to this and other Oriental forms 

 with two postnasals ; it stands nearer L. muralis, from which it is 

 well distinguished by the constant presence of two postnasals combined 

 with the absence of masseteric and upper temporal shields. In the 

 absence of a dark vertebral stripe or series of spots it agrees with 

 L. muralis, vars. vaucheri and hocarjii, whicli are the continental 

 forms geographically nearest to it (Spanish Peninsula and North- 

 West Africa), and a direct derivation from the common ancestor of 

 these forms is highly probable. 



Section V. Centromastix, Blgr. — Ventral plates overlapping and 

 notched between the longitudinal series, whicli are 6 in number; a 

 single postnasal ; some of the caudal scales produced into raised spines. 

 Pterygoid toothless. A single species. 



28. LACERTA ECHINATA. 



Lacerta (Zootoca) echinafa. Cope, Proc. Ac. Pliilad. 1862, p. 189. 



Lacerta hirticauda, Vaillant, Bull. Soc. Philom. (7), viii, 1884, p. 

 168, and Bull. Soc. Zool. France, ix, 1885, p. 344, pi. xii. fig. 1. 



Lacerta echinata, Bouleng. Zool. Eec, Kept, xxi, p. 10 (1885) ; 

 Bedriaga, Abh. Senck. Ges. xiv, 1886, p. 385; Bouleng. Cat. Liz. iii. 



