Collin — JSotes on Speci»ieiis of Borboridce and some Ephydridce. 239 



aud the ci-oss-nerves are mucli less distant. (Length 1 J ; wings 



2| lines.) 



" Found by Mr. Walker near London." 

 One female specimen in the Collection. Tliis must be identical witli 

 ixdlifrons Fin., as suggested by Stenhamnier, thougli tliere are no distinct 

 bristles above the middle tibiae, as might be inferred from Stenhammer's 

 I'emarks — " Tibiae intermodise ut in C. nitida et G. suillorum, tantummodo ob 

 minutiem speciei exilius spinosse." The species eei-tainly exhibits relationship 

 to this group in the presence of a distinct bristle beneath the hind femora 

 towards the tip, and in having a second vibrissal bristle curving up towards 

 the eyes in addition to the usual bristle. 



7. Borborus longipennis Hal. — Originally described as follows : — 



" Sp. 7. B, longipennis. Niger; jxdibiis ferrugineis ; femoribux et 

 tibiarum apice fuseis ; Imtteribus albidis ; alis pallido-nervom ; nervis 

 transversis remotis. 



" Black : pubescent, with little gloss : frontals opaque : segments of 

 the abdomen nearly equal : the extremity in the male but little 

 thickened : hairy : the underside and sometimes the incisures pale : legs 

 hairy ; in the male pitchy brown, with the fore coxse, and knees and the 

 base of the shanks, rust-brown : in the female, either of the same colour, 

 or rust-yellow, with the fore and hind feet, the end of the shanks and of 

 the postei'ior thighs, brown : the spur springs before the extremity of 

 the hind shank, and is very slender and long : the 2d joint of the hind 

 feet is one-half longer than the 1st, and a little thickened : in the male, 

 the first joint of the fore feet is very distinctly unguiculate ; poisers 

 whitish: wings hyaline with pale nerves; the small cross-nerve usually 

 at the first fifth of the discoidal cell. (Length I5 ; wings, 3 lines.) 



" On the sea coast of Ireland ; in various parts of England ; not 

 rare." 



Two males and three females in the Collection. The usual row of spines 

 in front of middle femora is entirely absent, not even a single spine, as in 

 ftavipennis, being present; but in the male there is a short, strong postero- 

 ventral spine ; the bristles about tip of middle tibiae are short and weak, and 

 the anteroventral bristle on hind tibiae is very weak and inconspicuous. It 

 is practically certain that the vitripennis of Zetterstedt and Stenhammer, but 

 not of Meigen, is identical with the above. 



8. Borborus vitripennis Meig. — Three specimens in the Collection, and a 

 fourth, very immature, probably representing the variety with legs less hairy 



