76 Messrs. C. R. Boettger and L. Miiller on 



than long. Frontal sliolilly longer than broad ; interi)arietal 

 moderately large. Parietals forming a suture bshind inter- 

 parietal. Fifth supralabial below the eye. Lower eyelid 

 with transparent disc. 4 supraoculars. Parietal bordered 

 laterally by 2 large supratemporals. Scales in ii8-32 longi- 

 tudinal series. 



Colour. Fairly constant. Upperside coppery or olive- 

 brown, with metal gloss. Sides of neck, run)p, tail, and limbs 

 deep brownish black. Lower surface deep black or bluish 

 grey, with black centres to the individual scales. Brown 

 dorsal zone separated from black sides by a slightly paler 

 longitudinal stripe which occupies two scales in breadth. A 

 number of small light yellow or metal-greenish spots, with 

 darker margin, usually placed in 8-9 irregular longitudinal 

 lines on back. 



Length of head and body in the two largest measured 

 specimens : S 87 mm., ? 89 mm. 



Remarks. In most of the specimens from Hierro and 

 Gomera there is a number of small bluish-white points and 

 lines in the dark lateral zone ; but there are also specimens 

 without any markings on upper surface and sides, and occa- 

 sion.ally these maikings are found in animals from Tenerife. 

 We are therefore not at present prepared to regard the Chal- 

 cides from Gomera and Hierro as a separate subspecies. 



Distribution. Islands of Tenerife, Gomera, Hierro. 



Chalcides sexUneatus, Steindachner. 



Chalcides viridnnvs, Grav., var. sexlineata, F. Steindacliner, Sitzungs- 

 bericlitederMathematisch-Naturwisseuscbaftlicben Clas.se der Kaiser- 

 lichen Akademie der Wisseuschaften, C. Band, 1 Abtbeilung ( Wien, 

 1891), pp. 302-304. 



Type-locality. Calderade Tirajana, island of Gran Canaria. 

 Proportions. More like a Mahuia than a Chalcides. Rum.p 

 cylindrical, flattened above, with well-differentiated head and 

 neck, in strong contrast to C. viridanus, Grav. Head com- 

 paratively large, well set off from neck, rather high and 

 broad, with very broad cheeks in ^, head therefore much 

 broader than neck and scarcely narrower than rump; head in 

 ? slightly narrower than neck. Distance from snout to 

 auditory meatus contained in that from snout to anus 5^-6 

 times in (J , 5|-6 times in ? . Neck rather long and 

 distinctly set off from rump. Distance from snout to 

 shoulder contained in that from shoulder to loin 2 times in (J , 

 occasionally a trifle more in $ . Limbs short but stout, 

 lower les: not flattened. Length of fore limb contained in 



