332 Lacertidm. 



p. 11 (1887) ; Tornier, Zool. Jahrb., Syst. xv, 1902, p. 674 ; L. Miill. 

 Abh. Bayer. Ak. xxiv, iii, 1910, p. 659. 



Lacerta langi, Schmidt, Bull. Amer. Mus. N.H. xxxix, 1919, p. 492, 

 fig., pi. xxi. 



Body depressed. Head much depressed, flat above, 1^ to If times 

 as long as broad, its depth equal to the distance between the centre or 

 the posterior border of the eye and the tympanum, its length 3i to 

 4 times in length to vent in males, 4 to 4J times in females ; snout 

 obtusely acuminate, as long as postocular part of head or a little 

 shorter ; no parietal foramen. Neck narrower than head. The hind 

 limb reaches the elbow or the axil in males, the elbow in females ; 

 foot as long as head or a little longer ; digits slender, compressed 

 distally. Tail cylindrical, except at a short distance from its base, 

 where it is swollen and often even a little depressed, then tapering 

 again towards the end ; its length 21- to 3 times that of head and body. 



Nostril pierced between three or four shields. Rostral in most 

 specimens entering the nostril, in others not ; nasals small, forming a 

 short suture behind the rostral ; frontonasal as long as broad or a 

 little longer, broader than the internarial space ; prefrontals forming 

 a more or less extensive suture or separated by a small azygos shield* ; 

 frontal pentagonal or hexagonal, l-j to l-j times as long as broad, as 

 long as or shorter than its distance from the end of the snout, as 

 broad as or a little broader than the supraoculars, not or but scarcely 

 broader in front than behind, sometimes trilobate in front t ; parietals 

 ll^'to 1| times as long as broad, sometimes forming a suture on the 

 median line behind the frontoparietals, outer border straight or convex 

 and as often as not in contact with the upper postocular ; interparietal 

 usually narrow, sometimes divided into two, or much reduced, or 

 absent ; occipital rather large, trapezoid or triangular, sometimes as 

 broad as the frontal. Four supraoculars, first small and sometimes 

 fused with the first superciliary, second and third equal, fourth small ; 

 ■6 or 7 superciliaries ; granules between the supraoculars and the super- 

 ciliaries absent, or 1 to B'.in number. A single postnasal, in contact 

 with the frontonasal ; anterior loreal shorter than the second ; 4, less 

 frequently 5 % upper labials anterior to the subocular, which is not or 

 but little narrower beneath than above. Temple covered with uniform 

 small, obtusely keeled, granular scales. 



* In a male from the Ivory Coast. 



t In the type of L. hirticauda. 



J 5 in the type, according to Cope, and in a female in the Paris Museum 

 (Ivory Coast) ; on one side in three of the specimens in the British Museum, 

 and in one in the Paris Museum (French Congo). 



