the Local Races of some Conarian Lizards. 77 



that from snout to anus always less than 5 times in ^ and 

 ? , of hind limb )3|-3i times. Tail at most ^ longer than 

 head and body. 



Scales. As a whole, mucii as in C. vlridanus, but tlic 

 averago number of the longitudinal series of scales larger, up 

 to 35. 



Colour. The most primitive form as regards colour and 

 markings appears to be the phase called ^''histriata^^ by 

 Steindachner. Back roe-brown, with light whitish-grey 

 spots with black margin, arranged in longitudinal rows. 

 Dorsal zone margined by a narrow light stripe from supra- 

 ciliaries to base of tail, which is margined with black in many 

 specimens. Upper half of lateral zone occupied by blacki.sh- 

 brown band with lighter spots, extending from eye to loin 

 and base of tail ; lower half light, with darker and lighter 

 spots, so as to form a " pepper-and-salt^^ coloration. Limbs 

 brown, with dark margins to the scales and lighter and 

 darker spots. Tail brow n, with darker median and lateral 

 zone and indistinct liglit s|)otting. Lower surface yellowish 

 to greenish white, with small grey points on belly. Throat 

 ocbraceous yellow. 



Steindachner^s " var. nigrescens " is based on melanistic 

 specimens of this type. 



The " var. sexlineatus " of Steindachner is most strikingly 

 maVked. Uorso-lateral band deep black, extending from 

 nostril to base of tail, separated from lateral zone, which is 

 also deep black, by a narrow light yellow or greyish-white 

 line. Dorsal zone with 4 narrow yellowish- brown lines.- 

 Lateral zone divided into a broader upper and narrower 

 lower portion by a very narrow greyish-wliite line, extending 

 from ear across shoul ler to loin. A second white line, 

 margined b'ack on border of lateral and ventral zone on 

 anterior portion of rump. Limbs brownish, with narrow 

 blackish margins to the individual scales. Chin and throat 

 ochraceous yellow ; chest and belly bluish, paler anteriorly, 

 darker posteriorly. Tail metal-blue, scales of upper sides 

 margined with black. 



Length of head and body in the two largest measured 

 siiecimens: S 87 mm., $ 81 mm. 



Distribution. Island of Gran Canaria. 



III. — TlREXTOLA DELALAyDEI, DUM. ET BiBR. 



The Geckos of Gran Canaiia are a well-characterized race 

 which has been separated by Steindachner as Tarenlula 



