82 MR. G. A. BOULENGER ON LIZAEDS 



Nostril between the nasal, two postnasals, and the first upper labial ; rostral nearly 

 always excluded *. Nasals forming a median suture ; prefrontals forming an exten- 

 sive median suture, unless (very rarely) separated by an azygous shield. Frontal as 

 long as or a little shorter than its distance from the rostral, 1^ to 11 times as long 

 as broad, broader throughout than the supraoculars. Parietals 1^ to 1| times as 

 long as broad, in contact with the upper postocular, outer border straight or convex. 

 Occipital f as long as or shorter than and as broad as or broader than the interparietal, 

 sometimes twice as broad as the latter and as broad as the frontal. The two major 

 supraoculars, of which the first is nearly always the longer, separated from the super- 

 ciliaries by a complete series of granules ; first supraocular small, sometimes broken 

 up into two, never in contact with the frontal ; fourth also small and sometimes 

 broken up into two. 6 or 7 superciliaries, first largest, the suture between first and 

 second as often oblique as vertical. 



Two superposed postnasals ; anterior loreal shorter than second. A rather large 

 semitransparent area in the lower eyelid, with 5 or 6 vertically elongate shields. 

 5 (rarely 4) upper labials anterior to the subocular, the lower border of which is often 

 not or but slightly shorter than the upper, although liable to as much variation in form 

 as in the typical L. muralis. Temporal region covered with granules, or granules 

 and irregular small shields ; masseteric shield absent %, tympanic present, sometimes 

 preceded by a second similar shield ; upper temporals absent. 



No pterygoid teeth §. 



25 to 38 (usually 28 to 32) scales and granules in a straight line between the sym- 

 physis of the chin-shields and the median collar-plate ; gular fold distinct. Collar not 

 serrated, composed of 8 to 13 plates (usually 9 to 11). 



Scales on body granular, round or suboval, smooth or very faintly keeled, a little 

 larger on the sides than on the back, 54 to 81 (usually 60 to 70) across middle of body, 

 3 or 4 transverse series corresponding to a ventral plate, 37 to 60 in the middle of the 

 back corresponding to the length of the head. Ventral plates in 6 (very rarely 8 |1) 

 longitudinal and 24 to 31 transverse series (24 to 28 in males, 25 to 31 in females) ; 

 the plates of the two median series narrower, often much narrower, than those next 

 to them. Praeanal plate usually large, but variable in size, bordered by one or two 

 semicircles of small plates. 



Scales on upper surface of tibia granular, smooth, usually smaller than those on the 



* Exception in one half-grown specimen from Paul, Madeira. 



t The occipital is absent in the type-specimen described by Milne-Edwards — an individual anomaly, as 

 pointed out by Bedriaga. 



X Present in a male from Graciosa, Azores. 



§ Sometimes present, according to Bedriaga. 



II In a female from Madeira {MacrjiHivran) and in another from Paul ; these outer plates very small, but as 

 long as the adjacent plates. 



