Lacerta. 331 



$ Great Salvage 



f» »» 



(J Graciosa, Azores 72 66 27 12 30 22-19 29' 



. 70 65 25 11 29 19 29 



70 62 27 10 28 20-23 26 



. . 66 71 26 11 28 20-19 33 



. 59 61 31 9 32 18-17 29 

 „ Orotava, Teneriffe . 59 57 26 11 26 18 26- 



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 hav& 

 been introduced in the last century. Dumeril and Bibron reported 

 this lizard 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 affinity 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 hoeagii, which 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. Centeomastix, Blgr. — Ventral plates overlapping and 

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

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

 Pterygoid toothless. A single species. 



28. LACEETA ECHINATA. 



Lacerta (Zootoca) echinata, Cope, Proc. Ac. Philad. 1862, p. 189. 



Lacerta hirtieauda, 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, Eept. xxi, p. 10 (1885) ; 

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



