ATV'D BATEACHIANS OF BAKBARY. 139 



vent. The coloi-ation of the upper parts varies considerably ; lower parts unifurm 

 whitish. 



Four forms occur in Barbary : — 



A. FOEMA TYPICA. 



28 or 30 scales round the body. Olive or brown above, ocellated with black spots, 

 sometimes confluent into irregular transverse bands, bearing central white dots or 

 longitudinal shafts. Measures up to 140 millim. from snout to vent. 



Figured by Savigny in the Descr. Egypte, Suppl. pi. ii. fig. 7. 



Ranges from the Algerian Sahara to Egypt, Syria, Cyprus, Arabia, Persia, and Sind. 

 It is only found south of the Atlas; M. Lataste's specimens are from Tuggurt, 

 Ghardaia, and Cabes. 



B. Var. TILIGUGU, Gmelin, 1788. 



28 to 34 scales round the body (usually 30 or 32). Above olive or brown, with black 

 and white ocelli, and a more or less distinct lighter lateral band sometimes edged with 

 black inferiorly. Stouter and larger than the preceding, reaching a length of 170 

 millim. from snout to vent. 



An excellent figure is given in Bonaparte's ' Fauna Italica.' 



Inhabits Sardinia, Sicily, and South Italy, Algeria and Tunis, and the intermediate 

 islands ; also Tripoli, Egypt, North-Western Arabia, and Abyssinia. It is common 

 and generally distributed in Algeria and Tunis north of tlie Sahara. 



C. Var. viTTATUS, Boulenger, 1890. (Plate XVII. fig. 1.) 



30 to 34 scales round the body (usually 32). Bronzy brown above, without ocelli; 

 a light upper and a black lower lateral band. From snout to vent 115 millim. 

 All the specimens from Tangier belong to this variety. 



D. Var. POLYLEPis, Boulenger, 1890. (Plate XVII. fig. 2.) 



34 to 40 scales round the body (usually 36 or 38). Dark brown above, usually each 

 scale with a small round yellowish spot ; sides of neck with vertical black and white 

 bars, which disappear in the adult. From snout to vent 150 miUim. 



First noticed by Boettger from Casablanca, Mogador, and the city of Morocco. 



2. Chalcides lineatus, Leuckart, 1828. (Plate XVII. tig. 3.) 



Snout obtuse, scarcely projecting ; ear-opening much larger than the nostril. Xostril 

 pierced entirely in advance of the suture between the rostral and the first labial ; 

 supranasals distinct ; frontal longer than broad ; fourth labial entering the orbit. 

 Body cylindrical, much elongate; 22 to 26 scales round the middle of the body. Limbs 

 very small, tridactyle ; the second toe as long as the third ; the length of the hind limb 

 equals at least the distance between the ear and the fore limb, and is contained 12 to 



