ORNITHOBIA. 285 



bideritate; onychia small. Male. Abdomen nearly linear, shorter and 

 narrower than the thorax. Fern. Abdomen somewhat oval, longer and 

 broader than the thorax. 



1. equina, L. Fn. 1921 (1761); D. G. ; F. ; Schr. ; Eossi; Pz. ; 

 Latr. ; Nitzsch ; Fal. ; Meig. ; Mcq. ; Curt. ! B. E. ix. pi. 421 ; Zett. 

 Nigra, capite thoraceque fulvo flavoque variis, alls sordide hyalinis, 

 pedibus fulvis, tibiis posterioribus et femoribus nigro-subfasciatis, un- 

 guibus nigris. Long. 3-3^; alar. 8 lin. 



Black. Head tawny-yellow. Front black. Face pale-yellow. Eyes, 

 mouth, and antennae black. Thorax with a very large spot on each 

 side in front, and with the borders of the segments tawny -yellow ; three 

 pale-yellow spots forming an interrupted stripe on the disc, the third 

 more or less triangular on the scutellum. Pectus with slight transverse 

 furrows on each side. Wings somewhat dingy hyaline; veins brown. 

 Abdomen clothed with pale hairs. Legs tawny ; femora and posterior 

 tibia3 with imperfect black bands ; ungues black. 



Very abundant in the New Forest, Hampshire. (E.) 



Genus II. ORNITHOBIA. 



ORNITHOBIA, Meig. Zw. vi. 229 (1830). 



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

 thoracis dimidio paullo latius. Frons linearis, antice subconcava. 

 Facies subexcavata. Epistoma incisum. Ocelli nulli. Os capitis 

 dimidio non longius. Antenna non ciliatas. Thorax longitudine 

 latius, suturis duabus transversis sulcoque uno longitudinali. Alee 

 completse, mediocres, venis distinctis, discali transversa nulla. Abdo- 

 men brevi-obconicum, thorace paullo brevius. Pedes longitudine 

 mediocres. Ungues longi, validi, curvati, bidentati. Onychia parva. 

 Body of rather small size, nearly oval, depressed, tough, coriaceous, 

 shining, slightly hairy and bristly. Head of moderate size, a little 

 more than half the breadth of the thorax, a little broader than long, 

 bristly in front. Front linear, slightly concave in front. Face slightly 

 excavated. Epistoma deeply notched. Eyes large, oblong, slightly 

 convex, bare, not prominent, with very small facets. Ocelli none. 

 Mouth not more 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 broader than long, bare on 

 the disc, slightly bristly on each side, with two transverse nearly straight 

 sutures, and with a very slight longitudinal furrow. Sternum broad. 

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

 of the length of the wing ; subcostal vein ending at before one-third of 

 the length ; mediastinal vein ending before half the length ; radial vein 

 ending at much beyond half the length ; cubital vein ending at the tip 



