116 Lacertidas. 



species of the Lacertidee ; it appears probable that there is a direct 

 relationship between G. vittata and L. ecJmiata, although we cannot 

 point to any known species to account for their common derivation, 

 There also seems to be a distinct affinity with Bedriagaia. 



1. G-ASTEOPHOLIS VITTATA. 



Gastropholis vittata, J. Gr. Fisch. I.e. pi. i, fig. 1 ; Bouleng. I.e. 

 Gastropliolis lutzei, Tornier, Zool. Jahrb., Syst. xiii, 1900, p. 591, 



fig- 



Gastropholis prasina, Werner, Zool. Anz. xxvii, 1904, p. 462. 



Body depressed. Head rather strongly depressed, flat above, 

 nearly twice as long as broad, its depth equal to the distance between 

 centre of the eye and the tympanum, its length nearly 4 times in 

 length to vent ; snout obtusely pointed, as long as postocular part 

 of head. Upper surface of head slightly rugose. No parietal fora- 

 men. Pterygoid teeth absent. Necknarrower than the head. The hind 

 limb reaches the elbow of the adpressed fore limb ; foot as long as the 

 head ; digits slender, compressed distally, somewhat bent at the 

 articulations. Tail 2y times as long as head and body.* 



Nostril pierced between two shields ; nasals small, forming a very 

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

 little broader ; prefrontals forming an extensive suture ; frontal 1-^- to 

 \\ times as long as broad, shorter than its distance from the end of 

 the snout, broader than the supraoculars, but slightly broader in front 

 than behind, its anterior border somewhat trilobate ; frontoparietals 

 as long as the frontal ; parietals If times as long as broad, outer 

 border convex ; interparietal twice as long as broad ; occipital shorter 

 and broader than the interparietal,:]: from which it may be separated 

 by a small shield. Pour supraoculars, first small and on a line with 

 the superciliaries, second slightly longer than third, fourth much 

 larger than first ; 6 or 7 superciliaries§ ; usually 2 or 3 small scales 

 between the supraoculars and the superciliaries. || A single postnasal, 

 forming a suture with the frontonasal ; anterior loreal not half as 

 long as second, or fused with it ; 4 or 5 upper labials^ anterior to 



* 3 times in the type of G. prai.ina. 



t Eostral in contact with the frontonasal in the type of G. lutiiei. 



X As long and twice as broad in the type of G. })rasinii. 



§ 5 in the type of G. lutzei. 



II Only one in the type of &. lutzei, none in the specimen from Morogoro. 



T 3 on one side in the type of G. lutzei, 6-7 in the type of G. prasi^ia. 



