58 ASILlUiE. 



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. 355. 1 (1804) ; Ct. ! b. e. 153 ; Mq. ; 



Ztt. ; Lw. — armillatus, Fin. — longitarsis, Fin. Niger, capite cano, ahs 

 limpidis, tibiis plus minusve rufis ; Mas. alls apice fuscis, tarsorum 

 posticorum articulo primo longissimo ; Fcem. alls basi fuscis. Long. 

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



Black. Head hoary ; epistonia 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 haii's. Tibiae more or less red. 

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

 crown clothed with black hairs. Epistoma tliickly clothed with long 

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

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

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

 Legs clothed with short black hairs ; tibiae towards the base and 

 femora clothed with hoary hairs ; tibia3 red towards the tips ; fore 

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

 tibiae. Fem. Crown clothed with pale yellow hairs. Epistoma thickly 

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

 clothed with pale yellow hairs. Thorax thickly clothed with tawny 

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

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

 the length of the hind tibia. 



Generally distributed. (E. S.) 



Genus IV. DIOCTRIA. 



DiOCTRIA, Mg. kl. (1804); Fb. ; LL; Fin.; Mq. ; Ct.; Zll. ; Ztt.; 

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



Corpus majoris vel mediae magnitudinis, subUneare, glabriuscidum. 

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

 Oculi unicolores, non lineati. Proboscis vix obliqua. Antennce 

 quinque-aj'ticulafce, non stylatce ; articulus tertius longus, linearis ; 

 quartns et quintus breves. Areola mediastinaUs aperta. Tibiae parce 

 spinulosae, posticee intus villosae sen ciliatae. Onychia conspicua. 

 Mas. Abdomen medio gracihus, magis coarctatum. 

 Fcem. Abdomen pauUo crassius, sublineare. 



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

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



