AND BATEACHIANS OF BAKBART. 125 



longitudinal rows of ventrals, but sometimes only six. Two or three semicircles of 

 small shields on the anal region. Green above, with whitish or blue black-edged 

 ocelli, which may be confined to the sides ; lower parts uniform greenish yellow. 



From snout to vent 140 millim., tail 300. 



I have given a figure of this variety in the third volume of the British Museum 

 ' Catalogue of Lizards,' pi. iii. fig. 1. The upper surface of the head is represented on 

 Plate XV. fig. / of this Memoir. 



2. Lacerta muealis, Lauren ti, 1768. 

 L. agilis, Gervais. 



Lower eyelid scaly. Rostral shield not entering the nostril ; usually a single post- 

 nasal ; occipital shield small ; temple granular, usually with an enlarged circular shield 

 in the middle. Collar with even or very slightly serrated edge. Dorsal scales small, 

 granular, smooth or feebly keeled, 40 or more across the middle of the body. Ventral 

 plates broader than long, in 6 (rarely 8) longitudinal series. 



A very variable species, inhabiting Western and Southern Europe, South-western 

 Asia, and Barbary. It is recorded from Cyrenaica by Reichenow. 



In the specimens from Tangier, the scales are very small, obtusely keeled, 61 to 73 

 across the middle of the body, three or four transverse series corresponding to one 

 ventral shield. Four labials anterior to the subocular (one specimen has five on one 

 side, another only three). An enlarged shield, sometimes broken up into two or three, 

 is present in the middle of the granulate temple in five specimens, altogether absent in 

 a sixth. Upper caudal scales strongly keeled. Femoral pores 13 to 19, usually 17. 

 Olive-grey above, with small black spots or reticulations ; a more or less defined dark 

 lateral band, bordered above by a whitish streak or series of white spots ; hinder side 

 of thighs with round white spots ; two series of white, black-edged spots along each 

 side of the tail ; belly uniform white in both sexes, or with a few scattered black dots ; 

 throat with black dots. 



The largest male measures, from snout to vent 52 millim., tail 95 ; the largest female, 

 from snout to vent 50, tail 79. 



In specimens from the plains of the Spanish Peninsula (Valencia, Lisbon), the dorsal 

 scales are smooth and the caudals very feebly keeled ; 55 to 60 scales across the middle 

 of the body. Specimens from the Serra de Gerez have 54 to 63 scales across the body, 

 and these are obtusely keeled, and the caudals have well-marked keels. In Persian 

 specimens I count only 45 to 50 scales. In European specimens of the typical form 

 generally, the number of scales across the middle of the body varies from 48 to 65. 



In Morocco, this Lizard is as yet only known from Tangier. In Algeria it is widely 

 distributed north of the Sahara, though far less common than on the opposite shores of 

 the Mediterranean. M. Lataste collected specimens at Aumale, Rorfa des Beni Slimam, 

 Constantine, Setif, Chabet-el-Acra, Beni Mansour, Tebesa, and received some from Daya 



VOL. XIII. — PART III. No. 5. — October, 1891. u 



