370 MR. G. A. BOULENGER ON THE VARIETIES OF 
Since this paper was written Hr. Lorenz Miiller has reported (Zool. Anz. 1905, 
p. 502) the occurrence of the var. ceétii (= tiliguerta) at Binisaida, S.E. coast of 
Minorca, and he has kindly sent me one of his specimens, which agrees entirely with 
the Sardinian var. tiliguerta. Whether these lizards are really indigenous or were 
introduced by human agency is a question which Hr. Miiller himself has suggested for 
consideration, but which cannot at present be solved. 
Var. PITYUSENSIS. 
Lacerta muralis, var. balearica Boscé, An. Soc. Espan. H. N. xi. 1883, p. 245. 
Lacerta muralis, var. pityusensis Bosca, 1. ¢. p. 246. 
Lacerta muralis balearica, var. pityusensis Bedriaga, Abh. Senck. Ges. xiv. 1886, p. 254. 
Head (Pl. XXVI. fig. 1 @) once and a half to once and two-thirds as long as broad, 
moderately depressed, its depth in the tympanic region equalling the distance between 
the anterior border or the centre of the eye and the anterior border of the tympanum ; 
snout rather pointed. Neck as broad as or a little broader than the head. Body mode- 
rately depressed. Hind limb reaching the shoulder or the collar in the males, the 
shoulder, the axil, or the elbow of the adpressed fore limb in the females; foot as long 
as or a little longer than the head. Tail once and’a half to a little over twice the 
length of head and body, rounded in section, cyclotetragonal at the base. 
Rostral shield entering the nostril, often largely ; nasals forming a suture behind the 
rostral, separated from the anterior loreal by the postnasal, which is usually single '. 
Frontal as long as or shorter than its distance from the end of the snout; a series of 
eranules between the supraciliaries and the principal supraoculars”, the first or first 
and second of which are usually in contact with the first supraciliary. Occipital usually 
as long as and broader than the interparietal, sometimes much smaller. Parietals once 
and one-third to once and two-thirds as long as broad, in contact with the upper post- 
ocular. Upper temporal shield entirely absent or broken up into a series of small 
shields. ‘Temple covered with granular scales ; tympanic and masseteric shields distinct, 
the latter separated from the parietal by from one to three series of scales. Four upper 
labials anterior to the subocular °. 
26 to 34 scales and granules on a line between the symphysis of the anterior chin- 
shields and the median collar-plate; gular fold distinct; collar even-edged, formed 
usually of rather small plates, 9 to 14 in number. 
1 Two postnasals on the left side in two of the specimens in the British Museum, two on both sides in a 
specimen in the Madrid Museum. 
2 ‘These granules are reduced to a few in one of the specimens in the British Museum and in four in the 
Madrid Museum. 
2 Five on one side in two specimens, on both sides in one. 
