106 H. C. EFFLATOUN. 



R cell; 5 to 7 in R5 cell, some of which often rnn together; 3 or 4 

 spots in Ist M2 cell ; 4 or 5 in 2nd M2 cell and ô or 6 spots in Cul 

 cell; the M. and Cu cells are usiially entirely hyaline except the in- 

 ferior angle of the latter brown; the extrême wing base is also hya- 

 line; costal bristle very weak or absent; stigma dark brown; radio- 

 median and médian cross-veins not parallel and the latter is some- 

 what wavy; inferior angle of Cu cell drawn ont into a fairly long 

 but not very pointed angle, longer than M cell. 

 Squaniulae whitish; haltères yellow. 



T. conyzae is so far known from Egypt only and Frauenfeld as 

 early as 1856 gives as food plant for this species Conyza aegyptiaca. 

 I hâve captured 7 maies and 3 females on February 14th 1922, in an 

 old garden at Koubba, but hâve not been able to ascertain yet whether 

 the above mentioned food plant occurs in that locality. I hâve failed 

 to recapture this interesting species since and I feel convinced that 

 more success will be obtained by collecting the capitulums of the host 

 plant in order to rear the adults. 



I hâve also in my possession two spécimens caught by Maître 

 Ferrante and labelled "Cairo 1905." 



TEPHRITIS ARGYROCEPHALA, Eoew. 

 (PI. IV fig. 2 and PL I fig. 25) 



Lw., Germ Zeitschr., V. 372. t. T. f. 30. (Tnjpfta) (1844) et 

 Trypetid., 91. 10. t. XVII. f. 3. (Oxyna) (1862): Zett. Dipt. Scand., 

 VI. 2238. 41. (1847);Frfld., Sitzungsber. d. Kais. Akad. d. Wiss., 

 XXII. {Oxyna) (1856) et Verh. zool.-bot. Ges. Wien. XIII. 220. 

 (O.ryna) (1863); Schin., Verh. zool.-bot. Ges. Wien, VIII. 669.65. 

 {n.i'i/iKi) (1858) et Faun. Austr., II. 155. (1864); K.\ltenb., Pflan- 

 zenf.. 326.13. (Trypeta) (1872). 



DIAGNOSIS: — A médium sized species, much resembling 

 T. pvaecox Lw. but distinguished by the wings which possess only 

 6 hyaline spots in R5 cell, the 5 apical ones being of almost equal 

 size. 



Fpmale. Length of body : 4 mm.: ovipositor : 0.8—1.0 mm.; 

 wing : 4 mm 



DESCRIPTION:— Frons deep dull reddish-yellow, except on 

 the u}iper margin yellowish-grey and whitish along the eye margins 

 owing to a very délicate shining white pulverulence which extends 

 over the face, epistoma, the broad cheeks and the palpi; proboscis 

 reddish-yellow in front but dark brown, almost blackish behind and 



