58 



ASILID.E. 



of the abdomen, whose fourth and following segments are more or 

 less red. 



Very rare ; has been found near Bristol. In the British 

 Museum. (E.) 



2. brevirostris, Mg. kl. i. 255. 1 (1804) ; Ct. ! b. e. 153 ; Mq. ; 

 Ztt. ; Lw. armillatm, Fin. longitarsis, Fin. Niger, capite cano, alis 

 limpidis, tibiis plus minusve runs; Mas. alis apice fuscis, tarsorum 

 posticorum avticulo primo longissimo ; Fcem. alis basi fuscis, Long. 

 4-4i ; alar. 8-9 lin. 



Black. Head hoary ; epistoma hardly convex. Palpi cylindrical. 

 Wings colourless, extending beyond the abdomen. Veins black, tawny 

 at the base. Halteres tawny, with yellow knobs. Abdomen thickly 

 punctured, clothed with short hoary hairs. Tibia3 more or less red. 

 Male. Head thickly clothed with whitish hairs behind and beneath ; 

 crown clothed with black hairs. Epistoma thickly clothed with long 

 black hairs. Fore part of the eyes nearly flat, composed of large facets. 

 First and second joints of the antennae clothed with black hairs. 

 Thorax clothed with long hoary hairs. Tips of the wings brown. 

 Legs clothed with short black hairs ; tibia? towards the base and 

 femora clothed with hoary hairs ; tibiae red towards the tips ; fore 

 tibiae sometimes quite black; hind metatarsus as long as the hind 

 tibia?. Fern. Crown clothed with pale yellow hairs. Epistoma thickly 

 clothed with tawny hairs. First and second joints of the antennae 

 clothed with pale yellow hairs. Thorax thickly clothed with tawny 

 hairs. Wings brown towards the base. Tibiae clothed with yellow 

 hairs ; hinder tibiae red, with black tips. Hind metatarsus nearly half 

 the length of the hind tibia. 



Generally distributed. (E. S.) 



Genus IV. DIOCTRIA. 



DlOCTRIA, Mg. kl. (1804); Fb. ; LI.; Fin.; Mq.; Ct.; Zll. ; Ztt.; 

 Lw. Asilus p., Fb. ; Gm. ; Gfr. ; Shr. 



Corpus majoris vel mediae magnitudinis, sublineare, glabriusculum. 

 Color niger, obscurus ; abdominis latera nonnunquam flavo-picta. 

 Oculi unicolores, non lineati. Proboscis mx oUiqua. Antenna 

 quinque-arUculatte, non stylatae ; articulus tertius longus, linearis ; 

 quartus et quintus breves. Areola mediastinalis aperta. Tibiae parce 

 spinulosse, posticae intus villosae seu ciliatae. Onychia conspicua. 



Mas. Abdomen medio gracilius, magis coarctatum. 



Fcem. Abdomen paullo crassius, sublineare. 



Body slender, black, shining, somewhat bare, of large or middling 



size. Head very flat, compressed in front ; front broad in both sexes. 



