1876.] 197 



the front femora, &c., and consohriniis by the pale hairs behind the front 

 femora, and its entirely black hind femora, while both have different 

 front tarsi ; fascipes and spinicoxus have a black face and beard ; 

 crassipes has dilated middle tarsi ; antennatus has a capitate arista ; 

 ehganiidus is larger, with yellow anterior femora and blue tip to the 

 abdomen ; nemorum is smaller, with longer antennne, black hind legs 

 and more bristly front tibia? ; gravipes has black hind legs, and the 

 following species, tennis, has white-haired coxa; and femoi'a, and yellow 

 middle femora, while I think the diagnosis will distinguish it from any 

 recognized continental species. 



I caught one male and two females near Box Hill some years ago 

 on September 5th ; I think they were found on some stones on a 

 flattish bank running out into the river Mole, near Burford Bridge. 



P. TExris, n. sp. 



$ . Cupreo-ccneus, angustua, facie candidA, subangustd, barhd alba ; alulis 

 albo-ciliatis ; pedihus luteis, coxis nigris, albo-pilosis,femoribus aniicis nigris, 

 albo-pilosis, post ids apice nigris, unispiinosis, tihiis modice setigeris, posticis 

 7iigris, tarsis anticis subsimplicibus, articulo basali apice vix incrassato, arti- 

 culis reliquis longitiidine suhaqtiali ; hypopygii lamellis latis ; alis brun- 

 neacentibus. Long. 2\ lin. 



Long, narrow, dark coppcry-ajncons ; antenna; moderate, third joint about two 

 and a half times longer than broad, second joint with a long bristle above, arista 

 more than twice the length of the third joint, its own basal joint being also some- 

 what conspicuous ; face narrow, silverj-white, sides almost parallel, frons greenish 

 with a whitish gloss ; eyes densely hairy with a tawny pubescence, palpi brownish 

 with yellowish hairs ; beard shaggy, white. Thorax coppery-aeneous, with two in- 

 distinct dark longitudinal lines ; alula; dirty yellowish, fringe long, white ; abdomen 

 long, narrow, coppery-wncous, becoming purplish on the fourth and fiflh segments 

 and greenish on the sixth, the base of each segment darkened, bristles on the diso 

 black, but about the base and along the sides clothed with white hairs ; lamellae dirty 

 brownish-yellow, hairy, broad, not short, somewhat truncate and ragged at the end, 

 the lower corner with a produced point, and the upper corner pointed. Legs chiefly 

 luteous, C0X8B all blackish, front pair densely white-haired in front, hinder pairs 

 white-haired, with a few black bristles at their tips, front femora blackish with a 

 tolerably abundant, somewhat conspicuous, white pubescence behind, front tibiae 

 yellowish, with several bristles in front on the basal half, tarsi dull yellowish, darker 

 towards the tip, basal joint nearly equal in length to the next four, slightly swollen 

 at the tip beneath, middle legs luteous, thin, femora with the tip obscure aliove, and 

 with a slight wliitish pubescence beneath near the base, and about two some- 

 what inconspicuous black bristles near the tip, tibia; bristly down the outside, tarsi 

 darkening towards the tip, hind femora luteous, with the apical third black, especially 

 above, one bristle near the tip, and a faint white pubescence beneath near the base, 

 tibia; black, slightly brownish down the outside, rather bristly, tarsi blackish, two 

 basal joints about equal in length. Wings dark brownish, especially near the costa. 



