286 HIPPOBOSCID^. 



of the costal ; praebrachial vein at about one-fourth of the breadth of 

 the wing from the fore border, parallel with the cubital as far as the 

 praebrachial transverse, more slight from thence to the hind border; no 

 discal transverse vein; pobrachial vein slight along the whole length 

 except near the base ; anal vein slight but distinct. Abdomen short- 

 obconical, slightly bristly at the tip, a little shorter than the thorax ; 

 sutures of the segments indistinct. Legs stout, almost bare, wide 

 apart, of moderate length ; tibiaB a little shorter than the femora ; tarsi 

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

 curved, bidentate ; onychia small. 



1. pallida, Meig. Zw. vi. 230. 1. pi. 63. f. 21-24 (1830). Fulva, 

 capite testaceo-vario, thoracis disco fuscescente, margine postico testaceo, 

 alis cinereis. Long. 2-| ; alar. 6 lin. 



Tawny, paler beneath. Head testaceous along the eyes and in front. 

 Eyes brown. Disc of the, thorax brownish; hind border testaceous. 

 Wings grey, hyaline ; veins dark brown. Ungues black. 



Infests birds. Rare. (E.) 



Genus III. ORNITHOMYIA. 



ORNITHOMYIA, Olfers, Leach Eproboscid. Ins. (1815) ; Latr. ; Meig. ; 

 Westw. ; Mcq. ; Blanch. Hippobosca p., L. ; F. ; D. G. ; Schr. ; 

 Gmel. ; Fal. QrnytTiomyza, Zett. 



Caput mediocre aut parvum, subellipticum, depressum, coriaceum. Ca- 



put mediocre. Oculi magni, oblongi. Ocelli tres. Os capitis triente 



brevius. Thorax longitudine latins, suturis duabus transversis. Alre 



completse, longas, venis distinctis, transversis approximates. Abdomen 



brevi-obconicum, thorace brevius. Pedes longitudine inediocres. 



Ungues sat longi, curvati, tridentati. Onychia parva. 



Body of middle or rather small size, subelliptical, depressed, tough, 



coriaceous, shining, slightly hairy and bristly. Head of moderate size, 



more than half the breadth of the thorax, broader than long, very bristly 



in front. Front flat, concave in front, decreasing in breadth from the 



vertex to the face, which is somewhat excavated. Epistoma concave. 



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



small facets. Ocelli three. Mouth less than one-third of the length 



of the head. Antennae extremely short, ciliated ; first and second joints 



indistinct; third round; arista setiform, bare, with only one visible 



joint. Thorax 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 rather long and stout ; costal vein ending at beyond three-fourths 



of the length of the wing ; subcostal and mediastinal veins ending near 



together at before one-third of the length ; radial vein ending at before 



