LACERTA MURALIS IN WESTERN EUROPE AND NORTH AFRICA. 415 
which the ground-colour appears as narrow areas of a dark olive-grey; irregular 
black spots and round light dots are present on the upper surface and sides of the 
tail. 
The type specimen is figured on P]. X XIX. fig. 8, and the upper view of head on 
Pl. XXVIII: fig. 9: 
The narrower head appears to be the only constant character by which this lizard 
can be distinguished from the Corsican var. bedriage, but it is sufficient for preventing 
us, at present, from uniting the two forms. It is also remarkable that the five 
known specimens agree in having the rostral broadly in contact with the frontonasal, 
a character which occurs but exceptionally in the var. bedriage. 
VII.—NORTH AFRICA. 
(Plate XXIX.) 
Algeria is inhabited by a small form of Lacerta muralis very similar to the 
Iberian var. bocagei, except that the light dorso-lateral streaks are not so close 
together on the body. Specimens of this form from Oran and Tlemsen have been 
described as “ variété verte” by F. Doumergue, ‘ Essai sur la Faune herpétologique de 
YOranie,’ p. 124 (1901); while others, from Mascara, distinguished by the blackish- 
brown colour of the upper parts, have been named by the same anthor var. fusca 
(p. 125), a name already occupied. I have been favoured with the loan of two 
specimens from Mascara, and I have lately had an opportunity of examining a large 
number of lizards collected by Mr. Riggenbach in the Tamaruth Valley, Atlas of 
Morocco, which agree on the whole very closely with the Algerian specimens, and I have 
given a description of them, with figures, in the ‘ Novitates Zoologice,’ 1905, p. 75, pl. ii. 
Specimens which I received long ago from Tangier, through M. H. Vaucher, differ 
considerably from the preceding, and probably deserve varietal distinction. I 
propose for them the name var. vaucheri, whilst retaining the name var. bocagei Seoane 
for the other specimens from Morocco and Algeria, A var. tiliguerta has been 
reported from Tunis, but I have reason to doubt the correctness of the locality. 
Var. BocAGEI 1. 
My material consists of numerous specimens from the Tamaruth Valley, Atlas of 
Morocco (Riggenbach), several specimens from Tlemsen near Oran (J. Anderson), two 
(types of var. fusca Doumergue) from Mascara, and a few from the following Algerian 
localities in the Lataste Collection: Plateau de Sersou, Aumale, Setif, Daya, Tebesa. 
The depth of the head, in the tympanic region, equals the distance between the 
centre of the eye and the tympanum. ‘The hind limb reaches the shoulder or the 
* See above, p. 361, 
VOL. XVI.—PART IV. No. 9.— October, 1905. Bil 
