Lacerta. 319 



the narrow conception adopted by Mehely, as for instance his 

 L. saxicola, in which at least equally important differences in the 

 shape of the head, in the lepidosis, and in the number of femoral 

 pores* are used for the definition of varieties or subspecies only. 



Lacerta danfordii is intermediate between L. Iievis and L. oxycephala. 

 From the former it differs chiefly in the absence or vestigial condition 

 of the pterygoid teeth, in the more depressed head, in the absence or 

 faintness of the gular fold, in the absence or small size of the masse- 

 teric shield, in the smaller occipital shield in the male, and usually in 

 the absence of keels on the dorsal scales ; from the latter in the less 

 pointed snout, in the less flattened head, in the more frequent absence 

 of the masseteric shield, in the longer toes with more numerous 

 lamellae inferiorly, and in the absence of strongly enlarged subcaudal 

 scales, the latter difference being a very striking one, accompanied by 

 that furnished by the markings on the tail. 



25. LACEETA OXTCEPHALA. 



Lacerta oxycephala, part., Dum. & Bibr. Erp. Gen. v, p. 235 (1839) ; 

 Schreib. Herp. Eur. p. 404 (1876). 



Lacerta oxycephala, Bedriaga, Abh. Senck. Gres. xiv, 1886, p. 276, 

 pi. — , figs. 16, 29 ; Schreib. Verh. Zool.-bot. Ges. Wien, xli, 1891, 

 p. 579 ; Tomasini, Wiss. Mitth. Bosn. Herzeg. ii, p. 571 (1894) ; 

 Werner, Eept. Amph. Oesterr.-Ung. p. 45, pi. ii, fig. 5 (1897), and 

 Wiss. Mitth. Bosn. Herzeg. x, 1907, p. 661 ; Mehely, Ann. Mus. Hung, 

 vii, 1909, p. 468, pi. xiii, fig. 8, and pi. xv, figs. 6, 7, 9 ; Schreib. Herp. 

 Eur., ed. 2, p. 383, fig. (1912) ; Bouleng. Tr. Zool. Soc. xxi, 1916, 

 p. 75, pi. vi, figs. 1, 2. 



Lacerta tomasinii, Schreib. Verh. Zool.-bot. Ges. Wien, xli, 1891, 

 p. 580. 



Head and body strongly depressed. Head 1^^ to If times as long as 

 broad, its depth, in the tympanic region, equal to the distance between 

 the centre or the posterior corner of the eye and the anterior border of 

 the tympanum ; occipital region quite flat or even a little concave ; 

 supraocular region rather convex ; snout pointed, as long as or a little 

 longer than postocular part of head ; cheeks more or less swollen in 



* It was at one time believed that L. anatolica differs from L. danfordii in 

 having fewer femoral pores (15-21 as against 19-26). A more recent statement 

 by Werner (1903) has, however, disposed of this supposed difference, which, 

 €ven had it been confirmed, could not be allowed much importance, consider- 

 ing the range of variation in species known from a larger material (13-25 in 

 the typical L. muralis, 16-24 in L. Isevis and L. oxycephala, 12-24 in L. dugesii). 



