136 Bulletin de la Société Royale Entomologique d'Egypte 



in the basal lialf of the wing:, under the stigma, 

 extends from M i to the lower wing margin where it 

 becomes gradually wider; the second in the apical 

 half of the wing and situated immediately below the 

 short radio-median cross-vein extends also from Mi 

 to the lower wing margin but with its outer margin 

 ivell before tlie cnrved median cross-vein; the third 

 indentation in the apical third of the wing extends 

 from R4 + Ô, crossing R 5 and 2nd M2 cells to the 

 lower margin; its inner margin follows the same curve 

 as that of the median cross- vein and *ts distance lo 

 this cross-vein, is equal to the distance between the 

 outer margin of the second deep indentation and the 

 median cross-vein; its outer margin slants much out- 

 wardly, especially below M i so that the indentation 

 is much wider and inflated below than above. The 

 small, rather sauare-slinpcd indentation at the upper 

 margin is situated at the middle of the wing and ex- 

 tends from the costa to about half way between R2 -f 3 

 and R/i + 5, its inner top corner touching the tip of 

 Ri. 



Squamulae and haltères yellowish-white. 



This and 8. aegyptiaca are both common in all the 

 wadis around Helwan and probably wherever the 

 certain food plant, Stachys aegyptiaca, of one of the 

 two species growls. Unfortunately I am not in a posi- 

 tion to say which of the two species breed in that 

 plant, but T have << swept ■» both species from the 

 Stachys and I therefore would no'l be surprised if this 

 plant proved to be the host of both species. Mv dates 

 for S. Debskii extend from Mar;h ist to May 5th (1922) 



