30 H. C. EFFLATOUN. 



of Ist M2 cell; médian cross-vein long and oblique, not parallel wit!; 

 the radio-median cross-vein; Cul + Cu2 with a very characteristic, 

 deep, médian bend, and with its lower portion considerably pro- 

 longed; M celi much dilated ; Cu cell with the inferior angle drawn 

 out into a point, in some cases reaching almost to the hind margin 

 of the wing. 



TYPE : Miisra uhae Gmelin (1788) 



This genus has become a very large and important one in late 

 years, owing to wliich fact Bezzi and Hendel hâve been compelled 

 to split it up into many subgenera and divisions This applies parti- 

 cularly to the Aethiopian, Oriental aud Australian members of the 

 genus', which are very numerous and differentiated. As the Palaearc- 

 tic species however are only five in number (including the doubtful 

 sexmacidatus, Walk.) I propose to leave them in the old genus, as no 

 useful purpose would be served in splitting them up into varions 

 subgenera, their individual characters being sufficiently distinctive. 

 In the case of zonatu.<, Saund. however, I hâve preferred to place 

 it in the subgenus Chaetodacus. 



The five species of the genus Dacus represented in the Palaearc- 

 tic Région hâve ail been recorded in Egypt but D. oleae, Gmel., th- 

 well known fruit-fly of the olives is most certainly not established in 

 the country. Of the other four species D. longistylm, Wied. is the 

 only one that can be considered as an Egyptian species. D. semis- 

 phaereus, Beck. and D. annulatus, Beck. hâve never been recorded 

 from this country since they were originally captured by Ehrenberg 

 in 1857. I am of "opinion, therefore, that unless thèse two species are 

 recaptured in Egypt, they should not be considered as "Egyptian." 

 Practically the same applies to D. xexmamlatus, Walk., but the 

 arguments for the suppression of this species from the Egyptian 

 fauna are even stronger, as the type has very probably been destroy- 

 ed and moreover most of the species of this author hâve become 

 synonyms. 



