284 HJPPOBOSCID^;. 



r ( distinct . 1. HIPPOBOSCA. 



f none. Discal trans- \ 



r complete. 



' three. Prabracl and C dose together . 3. ORNITHOMTIA. 



Wings discal transverse veins ^ fer apart 4. RJDKOBOHA. 



very narrow . 5. STENOPTERYX. 



none 6. MELOPHAGUS. 



Genus I. HIPPOBOSCA. 



HIPPOBOSCA p., L. Fn. 1921 (1761); D. G. ; F. ; Schr. ; Rossi; 

 Panz. ; Latr. ; Fal. ; Meig. ; Mcq. ; Curt, j Westw. ; Zett. ; Blanch. 

 Nirmomyia, Nitzsch. 



Corpus mediocre, ovatum, depressum, coriaceum. Caput parvum. 

 Oculi magni, oblongi. Ocelli nulli. Os capitis dimidio brevius. 

 Thorax suturis duabus transversis, antica interrupta. Sternum la- 

 turn. Alee complete, mediocres ; venae longitudinalis et transversae 

 distinctee. Halteres minuti. Abdomen pilosum, subpetiolatum ; 

 latera antice mucronata. Pedes robusti. IJngues duo, longi, validi, 

 curvati. Onychia parva. 



Body of middle size, oval, depressed, tough, coriaceous, shining, 

 slightly hairy and bristly. Head small, about half the breadth of the 

 thorax, circular, including the eyes. Vertex slightly raised. Front 

 and face flat ; front concave in front. Epistoma concave, bristly beneath. 

 Eyes large, oblong, slightly convex, bare, not prominent, with very small 

 facets. Ocelli none. Mouth less than half the length of the head. 

 Antennae extremely short ; first and second joints indistinct ; third 

 round ; arista setiform, bare, with only one visible joint. Thorax 

 rather broader than long, bare on the disc, slightly bristly on the sides, 

 with two transverse sutures ; one in front interrupted in the middle, 

 the second between the wings slightly curved. Sternum broad. Wings 

 of moderate size, rather stout ; costal vein ending at about three-fourths 

 of the length of the wing ; subcostal vein ending at a little before half 

 the length; mediastinal vein ending at a little beyond half the length; 

 radial vein ending at a little beyond the mediastinal; cubital vein 

 ending very near the tip of the costal ; prasbrachial vein obsolete 

 at a short distance beyond the prsebrachial transverse vein; pobra- 

 chial vein much nearer to the fore border than to the hind border of 

 the wing, obsolete at a little beyond the discal transverse vein, which is 

 very oblique. Halteres minute. Abdomen hairy, compact, subpetio- 

 lated, with a process on each side in front ; sutures of the joints indis- 

 tinct. Legs rather short, very stout, slightly bristly, the four posterior 

 very wide apart ; tibiae a little shorter than the femora ; tarsi but little 

 more than half the length of the tibiae; ungues long, stout, curved, 



