UEPOKT ON ECONOMIC ENTOMOLOGY 
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Mr. F. V. Theobald has contributed a paper on mosquitoes, giving a synoptic table of Mosquitoes 
all those species recorded as occurring in the Sudan and describing six new species and 
a new sub-species. 
A few notes on fungoid pests are included in this report, and it is hoped that they 
may be of some interest to farmers whose crops suffer from them. 
Figures 51 and 52 are reproduced by kind permission of the Editor of the Juiirual of 
the Royal Army Medical Corps. Plates XXIII., XXV., XXVII.-XXXIII., and XXXV. 
are hy Miss C. M. Beard; Plates XXIV. and XXVI. are by Mr. Hereward Dollman. 
In conclusion, I wish to express my gratitude for the many kindnesses shown me 
during the two years that I have been working in the Sudan. 
In particular my thanks are due to Mr. Currie, Director of Education, for the help he 
has given me in many ways—amongst others, by placing the College garden at my 
disposal for purposes of experiment and observation. 
To Mr. F. V. Theobald, Vice-Principal of the South-Eastern Agricultural College, Acknowiedg- 
Wye, Kent, I am greatly indebted for much invaluable assistance, both in the identification 
of insects, and in many other matters connected with this Report. 
Other gentlemen to whom I would express my thanks for their kindness in identifying 
insects and ticks are Mr. E. E. Austen, Sir G. F. Hainpson and Mr. C. O. Waterhouse, 
of the British Museum, Mr. Robert Newstead, of the Liverpool School of Tropical Medicine, 
and Mr. Draper, of the Government Gardens, Egypt. 
To Mr. C. L. Slade, Town Engineer, Khartoum, I am indebted for notes on the 
shipworm (Teredo), which does a considerable amount of damage to submerged woodwork 
in the harbour at Port Sudan. 
Among those who have rendered valuable aid by collecting insects and ticks and hy 
reporting insect pests are Colonel Hunter, Major Dansey Browning, Captain Ensor, 
Captain Mackenzie and other officers of the Egyptian Medical Service ; El Kaim. Olver Bey 
and El Bimb. Williams, of the Veterinary Service; El Kaim. Burges Bey, El Bimb. Hills, 
Mr. Butler, Superintendent Game Preservation, the Inspectors of the Agriculture and 
Lands Department, and many of the Governors and Inspectors of Provinces. To these 
and to many others, whose names are too numerous to mention, I would here express my 
very hearty thanks. 
Animals injurious to Man and xVnimals 
Mosquitoes 
A large number of mosquitoes have been collected in various parts of the country Mosquitoes 
during the past two years. Among them are representatives of six new species and a new 
sub-species.1 
Beginning with the northern provinces, Dongola appears to harbour but few of these 
pests. During the winter 1906-7 some of the village wells contained Gulex fatiyans larvai, 
while Ir’yretophorus oostali.< was found breeding in a few pools on sandbanks in the river. 
Steyomyia fasciata probably occurs in the towns, but was not noticed. 
The same species occur in Berber Province, where V. costalis, bred out in pools left on P. costalis 
sandbanks and in khors by the fallen river, is sometimes responsible for a certain amount 
of fever that prevails during the winter months. The numbers that come from these 
places are, however, few compared with those that emerge from gadwals and small canals 
on artificially irrigated farms, if sufficient care is not taken to control them.- 
‘ Hce pnyc 249 of this Report. 
- See page 64 of this Report. 
