the Local Races of some Canarian Lizards. 75 



11. — The Species of Chalcides of the Western 

 Canaries. 



Tlie specimens of Chalcides from Gran Canaria, of which 

 Steiiuhichiier has tlescribed a number of colour-varieties, are 

 foiistantly distiiiguisiied from ty})ical C. luridaiius, Grav., of 

 Tenerife, Gomera, and Hierro not only hy tiieir colour and 

 marliings — which may vary in all of tliem, — but also by the 

 proportions of their body. They have not the formless 

 cylindrical shape and the small liead which is not set off 

 from the neck, nor the short thin liuibs, but their head is 

 larger and thicker, better set off from the neck ; the neck is 

 longer in proportion to the body and slightly constricted iu 

 front of the slioiilders, antl the limbs are longer and stouter. 

 In addition to these habitual characters, the throat and belly 

 are never black as in typical viridanus. There is, further, a 

 tendency to develop longitudinal stripes, a character never 

 observed in any of the numerous specimens of C viridanus, 

 Grav., from Tenerife, Gomera, and Hierro. 



The Chalcides of Gran Canaria must therefore be regard(.'d 

 as a separate species, for which the oldest name is Chalcides 

 sexlineatus, Steindachner. 



Chalcides viridanus, Grav. 



Gongjflus viridanus, J. L. C. Gravenliorst, Verliandlunpen der Kaiser- 

 lichen Leopoldiniscii-Carolinischeu Akademie der Natiirl'ur.-cher, 

 15. Baud (Breslau iiud lionu, 1851), 1 Abtbeiluiig, pp. O-18-350, 

 Tab. XXXV. 



Type-locality. Island of Tenerife. 



Proportions. Body regular cylindrical, rather slender. 

 Ili'ad small, scarcely set off from neck, moderately high, with 

 slightly broader cheeks in c?,whicli, however, are always 

 distinctly narrower than rump. Distance from snout to 

 auditory meatus 6|-7 times contained in that from snout to 

 anus in (J, 7i-7^ in ? . Neck relatively short, indistinctly 

 st't off Irom rump. Distance from snout to shoulder con- 

 tained in that trom shoulder to loin twice in cJ , 2^ times 

 in ? . Limbs short and weak, lower leg flattened ; length 

 of fore limb contained in that of head and body at least 5^ 

 times in (J, 6 times in ? , of hind limb 3f— 4 times in ^J, 

 4^ in ? . Tail usually regenerated in adults, in younger 

 specimens its length is about 1^ that of that of head and body. 



Scales. Nostril in front of suture between rostral and first 

 snpralabial. Kostral twice as broad as high, concave behind; 

 supranasals in contact with one another. Inteinasal broader 



