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the paths there rises fine gray dust which settles itself on 

 the road-side plants, therefore in July, when we visited Taveta, 

 the forest has not a very attractive aspect. The forest fauna 

 presents not much variety. There were very few butterflies, 

 amongst beetles only Mylabridae (on clearings) were abundant; 

 along the banks of the river Lumi winding in the forest cu- 

 rious horned flies (Diopsidae) could be caught, and on the 

 outskirts around blooming mango trees swarms of Hymenoptera 

 and different Cetonia filled the air. Under fallen leaves we 

 took the usual harvest of cockroaches, spiders and crickets, 

 and under fallen trees in some places munerous passages of 

 termites were to be found. In one of such nests of Rhino- 

 fennes putorius we were fortunate in finding an interesting 

 termitophilous catterpillar of the family Tineidae. The Ehino- 

 ternies termites themselves contained in their intestine nume- 

 rous parasitic Trichonymphidae which we sought for in vain 

 amongst the termites of Uganda. 



In two hours distance from Taveta there is a small lake — 

 Chala, across which the Anglo-German frontier passes. This is 

 a typical crater-lake situated on the top of a rather high vul- 

 cano and possessing exceedingly steep and, in places, even 

 vertical shores. As the acquaintance with the fauna of one 

 of the numerous crater-lakes was of great interest for us, we 

 made an excursion to lake Chala. We stopped at the foot of the 

 vulcano Chala on the banks of river Lumi which is very nar- 

 row in this place, and here we stayed for 3 days. The descent 

 to the lake is possible only from the German side by a path 

 leading to the water from a frontier post of askari, i. e. black 

 soldiers. From all other parts descent to the water is possible 

 only by means of a rope from the edge of the crater. The lake 

 did not gratify our expectations. Plancton is very poor, nearly 

 absent. Under stones that line the shore only several Isopoda 

 were to be found. Angling gave us only several small fishes 

 of Acanthopteri; and by means of lobster-traps brought from 

 Russia and baited with meat it was found that the lake pos- 



