(i2 



/ The Mosquitoes of Egypt, The Sudan and Abyssinia 



BY 

 FkED. \'. TUEOBAI.D. M.A.. 



Vice Principal of the S.E. Agricultural College ; Foreign Member of the Association 



of Economic Entomologists, Washington, D.C., U.S.A. ; President of the 



Association of Economic Biologists of Britain, etc. 



The folloAnug paper is mainly based on the material collected by Dr. Andrew 

 Balfoiu-, Dii'eetor of the WeUcome Jiesearch Laboratories, Khartoimi. aud to some extent 

 by Captain Lyle Cummins, R.A.M.C, Dr. Keatinge. !Major Ronald Ross, C.B., late 

 I.M.S., and othei"s. Many of the notes are those sent me by Dr. Andrew Balfoui'. 



The specimens collected by the Du'ector were mostly taken during a 

 trip up the Blue Xile to Roseires. up the White Xile to Regaf in the 

 Lado Encla\'e and up the Sobat and its two bi'anches the Baro aud the Pibor 

 in Abyssinian temtorv. 



As one might expect the regions travei-sed by the Nile and its tributaries 

 are veiy prohtic in regards to this group of Diptera. Tliis is especially 

 noticeable along the coiu"se of the Blue and White Xiles, where in many parts 

 the number of these pests is enomious. Xot many species are yet knoAvn 

 from this region, but it is almost certain that very many more exist. 



The chief pests seem to be in the genera Culex and Mansonia, and amongst 

 the Anophelina we find abvmdance of a CeUia, C. pharoensis, Tlieobald, and a 

 Mvzom>na, M. funesta, Giles. A neAv Anopheles (A. iceUcoinei) closely related 

 to Aiuiphelea 'jiffa-"^ Giles, fi'om India is described and a new Myzomyia also 

 some other Anophehnes of considerable interest. The collection made by Dr. 

 Balfom- also contained a new Uranotaenia ( U. balfouri) and at least one new genus 

 ( Etorleptiomyia ). Two strange males occuiTed in the collection, one undoubtedly 

 the male of my genus Mimomna. Tlie other I c-annot place in spite of its 

 marked palpal character. I have merely described it A\-itliout referring it to any 

 definite jX)sition, as it was in too damaged a condition to show scale sti*ucttii"e. 

 The great number of Man-sonia unifonnis, Theobald, was the most noticeable 

 feature during Dr. Balfoui*'s tiip. For other locaUties vide Dr. Balfour's list, 

 which I have checked. 



Many of the specimens showed the presence of a i)arasitic tick attached to 

 them. When aUve the parasite resembles a tiny presened clieny, says Dr. 

 Balfour. As a rule this parasite is attached to the under surface of the thorax 

 and abdomen, but it was once found on the wing of an Anopheles. Tlie coloiu- 

 varies in intensitv. 



