ALLIED TO LACERTA MUEALTS. 75 



important differcuces in tlie slmpc of the head, in tlie h-pidosis, and in the number of 

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



Lacerta danfordii is intermediate between L. Icpvis 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 masseteric shield, in the smaller occipital sliield 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 witli more numerous lamellse inferiorly, and in the absence 

 of strongly enlarged subcaudal scales, the latter difference being a very striking one, 

 accompanied by tliat furnished by the markings on tlie tail. 



Lacerta oxycephala. 



Lacerta oxycfpliala, part., Dum. & Bibr. Erp. Gun. v. p. 2;55 (1839) ; Schreib. Herp. Eur. p. 401 

 (1875). 



Podan'is o.rycephala Bonnp. Anipli. Eur. p. 30 (18-iO). 



Lacerta o.vi/ccphala Be(h-i:i<;:i, Abli. Senck. Ges. xiv. 188G. p. 27(3, pi. — . figs. 16, 29 ; Schreil). 

 Verb, zool.-bot. Gas. Wion, xli. l.s'Jl, p. .579 ; Tonuisiiii, Wiss. Mittb. Bosn. Herzeg. ii. 1894, 

 p. 571; Wernor, Kept. Ampb. Oe.sterr.-Ung. p. 45, pi. ii. fig. 5 (1897), and op. cit. x. 1907, 

 p. GGl ; MiHicly, Ann. Mus. Hung. vii. 1909, p. 4Gf>, pi. xiii. fig. 8, and pi. xv. figs. C, 7, 9 ; 

 Scbreib. Herp. Eur. eil. 2, j.. 383 (1912). 



Lacerta tomasinil Scbruib. Verb, zool.-bot. Ges. Wien, xli. 1891, p. 580. 



Head and body strongly depressed. Head Ii to 1| 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 conve.v ; snout pointed, as long as or a 

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

 length of pileus 2 to 2^ times its width. Neck at least as broad as head. Hind limb 

 reaching the shoulder or the collar in the male, the elbow or the axil in the female; 

 foot as long as the head in the male, a little longer in the female; toes comparatively 

 short. Tail cylindrical, flattened at the base, about twice as long as head and body. 



Nostril between the nasal, two postnasals f, and the rirst upper labial, the rostral 

 being always e.xcluded. Nasals usually in contact with each other, the median suture 

 often very short ; exceptionally:}: the rostral formsa more or less extensive suture with 



* It waa at one time believed that L. anntolica diflfers from L. (laiifonHi in haviiip; fewer femoral 

 pores. A more recent statement by Werner (1903) has, however, disposed of this supposed difference, whicli, 

 even had it been confiiniefl, could not be accorded much importance, considerini; the range of variation in 

 species known from a largo nuiterial (13-25 in the typical L. mtiyulis, lG-24 in L. lacis aud L. o.ri/cephala, 

 12-24 in L. durjfsii). 



t I have come across but one escepliou, a male from Lissa, in which the postnasal is single on the right 

 side. 



:|: In one specimen from Curzola and in two from Brestica. 



l2 



