2 ARKIV FÖR ZOOLOGI. BAND 14. N:0 12. 



Lygodactylus picturatus Peters. 2 sp. Mombasa. ^U 1920, 

 coll. H. Granvik. 



Agama elgonis n. 7 specimens from the eastern slopes 

 of Mt. Elgon, 8000—8500 f. May 1920; 2 specimens from the 

 same slopes but lower down, altitude 6500 f. The most 

 striking feature of these specimens is perhaps the fact, that 

 the head and the body as well as the basal parts of the tail 

 are so strongly depressed. The broad basal portion of the 

 latter is distinctly flattened as well above as below. With 

 regard to the depression of the head the present specimens 

 remind about A. lionotus Blgr. from the country S. E. of 

 Lake Rudolf, but differ from the same by having the head 

 longer than broad. The scales of the Elgon specimens are 

 also smaller so that there are between 80 and 90 scales round 

 the middle of the body against 65 in A. lionotus etc. 



The nostril is directed towards the side, in the posterior 

 part of the nasal, below, or at least mostly below, canthus 

 rostralis. Upper head scales moderately large, smooth, or 

 very obtusely keeled; on the middle of the snout two elon- 

 gate keeled scales, the posterior of which is much the longer, 

 and behind these in the same line a third enlarged but broader, 

 more or less pentagonal scale. Interparietal (occipital) en- 

 larged. Upper labials usually 10, sometimes 11 or 9. Groups 

 of spines around the ear-opening and on the sides of the neck. 

 The longest of the former hardly more than half the dia- 

 meter of the tympanum, which is a little smaller than the 

 eye-opening. Throat much plicate. A small and low nuchal 

 crest, but no trace of a dorsal crest. The scales on the sides 

 of the nuchal crest are very small, but somewhat variable 

 in size in different specimens. On the posterior neck the 

 scales increase in size, although smaller than on the back. 

 The scales on and next to the mesial line of the back are 

 very distinctly smaller than those on the sides of the back. 

 The former are also nearly smooth, or only very faintly 

 keeled and not mucronate. On the sides of the back the 

 scales become gradually more plainly (but never sharply) 

 keeled and more or less mucronate, more in some, less in 

 other individualg. Down on the flanks the keels gradually 

 cease again, sooner or låter, and the ventral scales, which 

 are smaller than those of the flanks, are quite smooth. On 



