ZIRO— SPIDERS' WEBS 109 



differed from that of the group we had just examined, 

 for several flowers were seen that had not been previously 

 noted but which had been noted at Jinja, on the main- 

 land, in 1910. Two instances of butterflies similarly 

 occurred ; and these facts suggested that these isles had 

 not been connected with the former group, but only with 

 that part of the coast immediately to the north of them, 

 the others perhaps having derived their inhabitants from 

 the mainland more to the west. (See map.) 



As regards birds, several giant herons, a dappled grey 

 heron which I had not seen before, and open-billed storks 

 in great numbers were seen. 



Flycatchers were seen and heard in fair number ; 

 Enswa-swa lizards seemed fairly numerous, for nine were 

 noted. 



Ziro is markedly a " spider island," but Mantidae were 

 not noticeably abundant. Of butterflies, Acraeines were 

 very abundant ; A. encedon in several forms was note- 

 worthy, A Lycaenid^ was taken which I found at Jinja 

 in 1910, but had riot been met with on any of the 

 islands : this is notable after what has been said about 

 the flora. 



Glossina was far from abundant, the average being 

 6-8 per boy-hour. 



We remained in our camp on Kerenge from February 

 13th-20th, using it as a base from which to visit neigh- 

 bouring isles. There was nothing very characteristic 

 about it ; it is flat and has a good deal of open grass land, 

 and there are remains of former banana plantations, now 

 full of the great spiders' webs to a disgusting degree : 

 to get one's face and hat, or bare arms, covered with the 

 sticky clinging web was extremely unpleasant. So strong 

 is the silk that a sunbird was seen in a web, having become 

 so entangled that it could not free itself ; we managed to 

 reach up to it with a long stick and set it free. The webs 

 * Lachnoenema bibulus. 



