A>D BATRACHTA>iS OF BAKBART. 139 



vent. The coloration of the upper parts varies considerably; lower parts uniform 

 whitish. 



Four forms occur in Barbary : — 



A. Forma typica. 



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

 sometimes confluent into irregular transverse bands, bearinir c.mtral white dots or 

 longitudinal shafts. Measures up to liO millira. from snout to vent. 



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



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

 It is only found south of the Atlas; M. Lataste's specimens are Croin 'i'iig:>urt. 

 Ghardaia, and Cabes. 



B. Var. Tii.iGuuu, 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 rent. 



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, Xorth-Western Arabia, and Abyssinia. It is common 

 and generally distributed in Algeria and Tunis north of the 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 11 o 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 suout to vent 150 millim. 



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



2. Chalcides LiNEATUS, Leuckart, 1828. (Plate XVII. fig. 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 iirst 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 



