Dolichopodidae. 255 



numerous bristles composing it. In some species as f. inst. crassipes, 

 the coxæ have instead of such spines a brush ot bristles. The coxæ 

 are long-haired, the hind coxæ without bristles on the outer side; in 

 the males the femora, especially the anterior, are generally more or 

 less long-haired, and in both sexes the tibiæ have dorsal rows ot 

 bristles, the middle tibiæ also a couple of ventral bristles; besides 

 there are apical or preapical bristles, small or wanting on the front 

 tibiæ; there may be one or several preapical bristles on all or some 

 of the femora, or they may be wanting. Hind metatarsus without 

 bristles, There are two claws, two pulvilli, and a somewhat narrow 

 empodium with bristles below. Wings of usual shape; the media- 

 stinal vein terminating in the subcostal vein, the discai vein with a 

 larger or smaller even curve; the posterior cross-vein placed in or 

 near the middle; the anal vein not reaching the margin; axillary lobe 

 well developed, but rounded. The discai bend lies on a convexity. 

 Squamulæ with a well developed angulary lobe, bearing a long fringe; 

 the inner part of the squamulæ short-haired, 



Of the developmental stages the pupa of P. fascipes is described 

 and figured by Heeger (Sitzungsber. d. Akad. d. Wissensch. Wien, 

 math. nat. Cl. IX, 1852, 270, Taf. XXVII, Fig. 3—4); (the larva described 

 as belonging to the pupa is not the Porphi/ropsAarxa, but, as declared 

 by Brauer in his work over the Dipterous larvæ, the larva of Scatopse 

 notata). Heeger seems to have found the pupa both under the bark 

 of Pinus, which was attacked by Tomicins, and in decaying ieaves at 

 the horders of water; he gives some data, but it is not possible 

 to extract anything out of them on account of the confusion men- 

 tioned. Beling describes (Arch. fiir Naturgesch. 48, I, 1882, 226) the 

 larva of P. crassipes. It is 11 mm long, 1,6 mm in diameter, cylindrical, 

 of whitish colour ; the last segment is short, with shallow, longitudinal 

 furrows; at the end there are below two larger, membranous teeth 

 with a broad base, and above and more forwards two smaller teeth, 

 and between the latter a small or indistinct wart; the posterior 

 spiracles lie below the upper teeth. The larva was found in the 

 ground in a forest of beeches on ''/s and the imago came on ^Vs. 

 I have examined the pupa of P. elegantula, which has been bred by 

 Mr. Schlick. It is yellowish, of a length of about 8 mm (exuvia) ; the 

 antennal sheaths lie in front of the head, directed downwards, but 

 not well marked; at the base of them there are two conical, trunc- 

 ated teeth, very close-standing, almost united and forming together a 

 short, thick, truncated process; farther downwards there are a pair 

 of small, transverse teeth, between them are a pair of hairs, and to 

 each side of the upper teeth is a strong bristle; further there are six 



