LIST OF DIPTERA. 673 



Var. Canus ; fades, mystax et barba alba ; scutellum albidum ; 

 abdomen nigrum, incisuris alhis ; pedes nigri ; aim cinerece, 

 dimidio basali hyalince ; halteres fusei. 



Chamounix. 



Group 6. Stilpnogaster. 



Facies sat parva ; pars convexa magna, valde convexa. Tho- 

 rax breviusculus. Abdomen omnino nigrum, nitidum. 



Stilpnogaster, Loeiv, Linn. Ent. iv. 82, 6. 



Face rather small ; convex part large, very convex. Thorax 

 somewhat shorter than in the other groups. Abdomen on both sides 

 shining black in all directions. 



48. Asilus .EMULUS. 



Cinereus ; facies el barba albce ; faciei pars convexa magna ; mys- 

 tax niger ; thorax fusco vittatus, vitta intermedia gemina ; 

 abdomen utrinque nigrum, nitidum, incisuris pimctisque duo. 

 bus ad basim albis ; pedes nigri ; alee apice subcinerea ; hal- 

 teres flavi. 



Asilus asmulus, Hoffm. ; Meig. Zweijl. ii. 329, 35. Loew, Linn. 



Ent. iv. 82, 48. 

 Asilus stabilis, Zeller, Lsis, 1840, 53, 7. 

 Asilus nigricans, Macq. Hist. Nat. Dipt. i. 309, 25. 



Austria. South Europe. 



Group 7. Itamus. 



Corpus nigro-cinereum, mediocre aut majusculum. Tibia? 

 plus minusve fulva?. Mas. — Sexualia lata, crassa, nigra, nitida. 

 Fiem. — Oviductus semper distincte elongatus. 



Middle or rather large-sized species, of a blackish gray colour. 

 Tibiae more or less tawny. Male. — Sexualia broad, thick, black, 

 shining. Fern. — Ovipositor of conspicuous length in all the species. 



Div. I. 



Abdominis segmenta 6um et 7um in oviductum comprehensa. 



Sixth and seventh abdominal segments forming part of the 

 ovipositor, so that the abdomen of the female appears five-jointed. 



