BITING AND NOXIOUS INSECTS OTHER THAN MOSQUITOES 35 



loose cotton wool, and were terribly shrunken and damaged. They presented all the 

 characteristics of a minute sand fly — the rounded shape, humped back and typical wing 

 venation. Some of the least damaged were sent to Mr. Austen at the British Museum, 

 who informs me that the fly is S. griseieollis, Becker, which was originally described 

 from specimens taken at Assuan. {St:c also p. 52). 



The green metallic Pi/cnosoma imtorium is found in the Southern Sudan. Colonel Py<:"oson>a 

 Hunter brought specimens from Shambe. These flies are filth carriers, like some of the 

 Muscidce which, of course, are represented and are very numerous in certain places. Musca 

 cloinextica is not often a great nuisance in Khartoum, though it is busy the moment the 

 sun rises and often drives sleepers from the roofs. I have noticed that the hot weather in 

 April soon kills ofi" these common house-flies. They are most aggressive in February and 

 March. 



Of greater interest is Auchmeromyia luleola, the flv whose larva constitutes the now Congo floor 



.' . . * . ™aggot fly 



well-kno^\Ti Congo floor maggot. This fly exists in the Bahr-El-6hazal pro\Tnce, and 

 specimens have been taken by Dr. Neave and Major Bray. The latter captured a pair 

 in coitu. They exactly answer to the description given by Mr. Austen in the Liverpool 

 Keport of the Trypanosomiasis Expedition to the Congo, 1903 — ^1904. Two specimens 

 were recently sent me by Yusuf Eft'. Darwish, of the Egyptian Medical Corps. He 

 took them at Mongalla on the eastern bank of the Upper White Nile. 



Specimens of the maggot have not yet reached me nor have I heard of it 

 being reported as a nuisance or a cause of invaliding.* Bengalia depresm is also of 

 importance medically {viih' Mr. Theobald's report, p. 83). 



Another interesting " find " was made by Mr. Crispin, who sent me a so-called tick from Lipotera 

 a tame Ibex at Suakin. I regarded this as a MdopluKju^, an insect, which though a true ' If"' 

 Dipteron bears no resemblance to a fly, yet is allied to the flat and leathery IlippohoKcidw on the ibex 

 which are so common in the Sudan and are found on horses, mules, camels and dogs. It 

 turned out, however, to be a Lipoptera, a closely allied form and apparently a new 

 species (vide Mr. Theobald's report). 



I append a list of the Sudanese Diptera mentioned above and in Mr. Austen's special 

 article (p. 51). 

 MuscidcB 



Glossina 



G. morsitans. Bahr-EI-Ghazal, S. Kordofan and Upper Sobat (Abyssinia). 

 G. palpalis. Bahr-El-Ghazal. Lado Enclave. 

 G. sp. / Bahr-El-Ghazal. Southern part. 



Stomoxince 



Stomoxys sp? Upper Blue and White Niles. 



Musca 



M. domestiea and allied sp. General. 



Tjiieilia ? . . ' . . 



^ . :- Not yet identified but probably numerous and general in distribution. 



Lompisomijia ) i j d 



Pyciiosonui 



P. putorium. Upper White Nile. 



P. marginale. Bahr-El-Ghazal. 



. * Quite recently Major Dansey Browning has sent me numerous specimens of the maggot from the Bahr-El- 

 Qbazal province. 



