1892.] AND BATRACHIANS FROM BARBARY. 17 



described by Mr. Boulenger had never more than 30. The speci- 

 mens from Duirat are all marked with white ocelli or shafts in black 

 spots, the general colour of the upper surface varying from dark 

 brown to dark grey, without any trace of the broad dorsal band of 

 a darker hue which occurs in all the Biskra specimens, none of which 

 are of a grey tint. In some specimens from Biskra the ocelli are 

 practically absent or only obscurely indicated. 



19«. var. TiLiGUGU, Gmelin. 



1, Tlem9en, Province of Oran ; 1, Mount Santa Cruz, Oran ; 1, 

 Hammam R'irha, Province of Algiers ; 2, Hamraara Meskoutine, 

 Province of Constantine ; and 3, Duirat, Tunisia. 



These specimens are stouter than the previous form and larger, 

 reaching 144 miUim. from the snout to the vent. The limbs also 

 are longer, as in one individual measuring 105 millim. from the snout 

 to the vent the hind limb is 29 millim. The scales round the body 

 vary from 30-32. In all of them there is a broad dorsal band with 

 a lighter-coloured broad band on either side of it, and all are 

 ocellated. The Duirat specimens are much paler than those from 

 the Tell. 



20. Chalcides boulengeri, sp. nov. (Plate I. figs. 1, 

 2,3.) 



2 specimens, Duirat, Tunisia. 



Snout wedge-shaped, not so broad as in C. sepoides, Audouin, 

 but with a projecting labial edge ; eye small, but slightly larger than 

 in C sepoides ; ear-opening an oblique slit at the commissure of the 

 mouth, but with a fringe of three pointed scales. The nostril is not 

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

 supranasals fused into a single shield ; frontal as broad or a little 

 broader than long ; four supraoculars, with four small scales below 

 them ; fifth labial enters the orbit. The limbs are weak, but stronger 

 than in C. sepoides ; the hinder pair are proportionally more deve- 

 loped than the front limbs. The hind limbs are penta- or tetra- 

 dactyle, and in length each equals about the distance between the 

 fore limb and the nostril ; the latter limb equals considerably more 

 than half its distance from the centre of the eye, and is pentadactyle \ 

 The body is not quite so long as in C. sepoides, and the sides are 

 angular as in that species. Twenty-eight rows of sc .es round the 

 body. 



Yellowish above, each scale finely margined with dark brown, their 

 centres whitish and presenting, in some instances, the appearance of 

 oceUi, recalling the ocellation characteristic of C. ocellatus, and this 

 is unmistakably marked especially on the tail, on which the ocelli 

 are arranged in more or less transverse rows. A black line through 

 the eye, and two fine black lines on either side of the frontal. The 



1 In one specimen the mamts is entirely absent on one side, but tbis is 

 probably due to an accident. 



Proc. Zool. Soc— 1892, No. II. 2 



