352 Lacevtkhe. 



This species is founded on a single female specimen from Fort 

 Portal, Eastern side of Mount Ruwenzori, forming part of the Duke of 

 the Abruzzi's exi^edition, and preserved in the Turin Museum. 



6. ALGMROIDES ALLENI. 



Algiroides alleni, Barbour, Proc. New Engl. Zool. Club, iv, 1914, 

 p. 97 ; Schmidt, Bull. Amer. Mus. N. H. xxxix, 1919, p. 501, figs. 



Differs from A. ofricanus in the following points : 



Nostril pierced between the nasal, the postnasal, and the first upper 

 labial ; no granules between the supraoculars and the superciliaries ; 

 dorsal scales less strongly keeled, smooth on the nape and on the sides; 

 24 to 28 transverse series of rentral plates ; only 4 plates in the collar. 

 No spots on the back, but a dark vertebral streak is present. 



Habitat. — North-eastern slope o^ Mount Kenia, East Africa. 



