400 av. m. aders. 



Drosophilidae. 



Drosophila sp. Very prevalent hovering over ripe fruit, in which they breed. 

 At times they alight on meat and human excrement. 



HiPPOBOSCIDAE. 



Hippoboscci maculata, Leach. Common on cattle, horses and donkeys. The 

 nmnber of Hippoboscids taken has been surprisingly few, and I am of opinion that 

 a moist damp climate like that of Zanzibar is inimical to their development. 



Hippohosca capetms, Olf. Has been recorded by a previous collector, I have 

 captured no specimens. 



Ornitlioeca podicipis, Kod. Taken from a species of heron. 



Lynchia maura, Bigot. Common on domesticated pigeons. Numbers of wild 

 pigeons and doves have been examined with negative results. 

 • Cyclopodia greefi, Karsch. Very abundant on flying foxes {Pteropus voellzkowi). 



Order SIPHONAPTERA. 



PULICIDAE. 



Xenopsyllu cheopsi, Roths. The commonest rat flea ; large numbers have been 

 collected from the following species of rats ; — Epimys norvegicus, Mus rattus and 

 Mus alexandrinus. The giant rat {Cricetomys gamhianus) and a shrew {Pachyura 

 mumm) are also heavily infested. 



Ctenocepbalus canis, Curtis. On dogs and in houses in town. Large numbers have 

 been taken from goats, and it occasionally attacks man. 



Ctenocephalus felis, Bouche. From cats. 



Sarcopsyllidae. 



Dermatophilus penetrans, L. Common throughout the two islands ; I have taken 

 them on two occasions from dogs. 



Echidnophaga gallinacea, Westw. Very common on fowls, the bare parts of the 

 head and the region around the eyes being often thickly encrusted. Several specimens 

 have been taken from the common town rats. 



Order RHYNCHOTA. 



CiMICIDAE. 



Cimex hemiplera, F. The tropical bed-bug is to be found everywhere throughout 

 the two islands. At times it is a veritable scourge in the prisons. 



Cimex lectulariits, L, This insect is extremely rare in Zanzibar. Our collection 

 contains a few specimens, all captured from one Goanese, who had resided for some 

 years in the town. 



Order ANOPLURA. 



Haematopinidae, 



Haenmtopinus tuberculatus, N. Common on domesticated buffaloes. 



Liognathus vituli, L. From calf. 



Pediculidae. 



Pediculus Jiumanus, L. A common pest among Indians, rarely found on native 

 Africans. 



