LIST OF DIPTERA. 379 



6. Ceraturgus? corndtus. 



Ftera. Badio-fuscus ; antennarnm articulus 3us lonffusiinus, 

 apice biarticulatiis ; thorax fulvus, viltis fuscis ; abdomen 

 fiavido fasciatum ; -pedes nnteriore.i rufescentes ; alee fmccs- 

 centes, areolarum discis sublimpidis. 



Dasypogon cornutus, Wied. Auss. Zweifl. i. 382, 25. 



Geuus2. DIOCTRIA. 



Corpus elonfjatum, cylindricum. Antennae o-articulatae, capite 

 mullo lougiores ; articuli 4us et 5us aequales. 



Dioctiia, Fabr. Sijst. Antl. 149; Latr. ; Fall.; Meig. ; Wied.; 



Macq. ; Curt.; Zell. ; Zett.; Loeiv. 

 Asilus, p., Linn. ; Fabr. Enl. Synt. ; Schr. ; Gmel. 



Mediastinal vein ending at much beyond half the length of the 

 wing. Subcostal ending at about three-fourths of the length. 

 Radial and cubital springing from a common petiole, which pro- 

 ceeds from the subcostal at about one-third of the length of the 

 wing, and is less than one-fourth of their length. Cubiial forked 

 before two-thirds of its length, joined by a veinlet with the first 

 externo-medial before one-third of its length. First and third 

 externo-medial springing from a common petiole at much before 

 half the length of the wing, united again by a veinlet, which near 

 its fore end emits the second externo-medial. Fourth externo- 

 medial and subanal springing from a common petiole at much 

 before half the length of the wing ; fourth externo-medial forming 

 near its base an angle, where it is united by a veinlet with the third 

 externo-medial ; subanal ending near the lip of the anal. Discal 

 areolet long, naiTOw, widening from the base to the tip. 



Europe. 



A. Abdomen cupreo-aureum. ... chalcogaslra, Duf. 



B. Corpus subca;rulescens. ... Harcynia?, Loew. 



C. Corpus atrum. 



A. Pedes toti nigri. (D. atricapiila, foem., Var. Pedes ex parte 

 rufescebtes). 

 PART II. 2 L 



