1. STRATIOMYIDiE 



57 





Fig. si.— Berinse (L'evts vallata). 



Fio. 82.— Xylomyiua- (Xylomyia maculala). 



Longitudinal (or long) veins. 



(/ Costa {or costal vein). 

 1 1 Mediastinal {or auxiliary) vein. 

 r Subcostal {or \st loiKjitudinal) vein. 

 d iladial {or 2nd longitudinal) vein, 

 e Cubital {or 3rd longitudinal) vein. 



e' Upper branchj ^^ ^^^ ^^^^-^^.^^ ^^^.], 



e- Lower branch J 

 / Discal {or 4th longitudinal) vein. 



f ^ Upper veinlet 



/^einlet ^ 

 veinlet V 



f- Second veinlet |- from the discal cell. 



p Third veinlet J 

 g Postical {or bth longitudinal) vein. 



gi Upper branch of the postical fork (sometimes forming a part of the 

 lo^\•er margin of the discal cell). 



g- Lower branch of the postical fork. 

 h Anal {or 6th longitudinal) vein. 

 i Axillary vein, 

 k Pra3furca = the common stem of the radial and cubital vems. 



Ambient vein = the continuation of the costal veins round the hmdmargin ol the 



wing. 



Cross (or transverse) veins. 



w Humeral cross-vein. 



X Discal {or middle) cross-vein. 



// Lower {or small) cross-vein. _ . 



Anal cross-vein =g- = the lower branch of the postical fork. 



