390 LIST OF DIPTKBA. 



hindward, and joinin(T the fourth extemo-medial near the tip of ilie 

 hitter. Fourth externo-medial and subanal springing from a com- 

 mon petiole at about half ihc length of the wing ; fourth extemo- 

 medial forming near its base an angle, where it is united by a vein- 

 let with the third externo-medial ; subanal ending close to the tip 

 of the anal. Discal areolet narrow, very long, nearly triangular, 

 widening from the base to the tip. The wing-veins of the species of 

 this genus are subject to great variation. The forks of the cubital 

 vein diverge more or less from each other, and the fore branch is 

 more or less straight or curved or angular, and in some cases emits 

 the stump of a vein from its angle. The first externo-medial is 

 generally parallel to the hind1)ranch of the cubital, but in some spe- 

 cies is united with it. The second externo-medial very generally 

 springs from a veinlet between the first and the third externo- 

 medial, but in one species appears as the fork of the first externo- 

 medial. The third externo-medial generally proceeds straight to the 

 border, but is often inclined to the fourth, and in some species joins 

 the latter on the border, or at some distance from it. The subanal 

 usually joins the anal on the border ; in a few species it is separate 

 from it, or is united to it at a distance from the border. In one 

 species there is a veinlet between the first and second extemo- 

 medial veins, and thereby an additional areolet is fonned in front of 

 the discal areolet. 



Europe and Asia Minor. 

 Div. I. TibijB anticae apice calcarata". 



Group 1. SAROPOGON. 



Species prae cajteris nudae. Facies sequaliter lata. Mystax 

 flabelli formis, faciem non transiens. Antenna* approximatJE ; 

 arista semper brevissima, struclurte varia;. Thorax non valdc ele- 

 vatus, setis dorsalibus abbreviatis. Abdomen longnm, maris magis 

 cylindricum, ffcmince magis planum. Pedes sat graciles; tibiie 

 posticae non incrassaia;. 



Saropogon, Loew, Linn. Ent. ii. 439. 



