178 MUSCID^E. 



b 1. Scutellum with several bristles at the sides, and a few on the 



disc. Species 16. 



b b b. Scutellum pubescent. Species 17, 18. 



a a. Antennae turned in opposite directions, lying close to the eyes. 

 Scutellum glabrous, with four bristles. 

 b. Eyes bare. 



c. Marginal areolet extending beyond the middle of the costa. 

 Species 19, 20. 



c c. Marginal areolet very small. Species 21. 

 b b. Eyes small, with minute erect hairs. Species 22. 



1. sylyatica, Meig. Zvv. vi. 207. 24 (1830) ; Mcq. ; Hal. ; Zett. 

 claripennis, Desv. Nigra, nitida, alis subhyalinis, halteribus fuscis. 

 Long. If ; alar. 3| lin. 



Shining -black. Frontalia dull blackish-brown. Face testaceous. 

 Arista very delicately pubescent. Scutellum long, with two marginal 

 and two apical bristles. Wings hyaline or yellowish; veins dusky; 

 costal blackish, ciliate at the base ; radial terminating half-way between 

 the subcostal and the cubital, the latter a little sinuous, running to the 

 tip of the wing; discal areolet longer than usual, with its posterior 

 angle rounded. Halter es blackish-brown. Legs long, pubescent ; spines 

 of the middle tibiaa few and distant ; second joint of the hind tarsi 

 linear, not thickened, more than twice as long as the first. Male. 

 Middle femora bearded, armed with a long spine at the base beneath ; 

 middle tibia? with a pencil of hair within, about the middle j middle 

 metatarsus compressed, hollowed out below, and bearded. 



Abundant. (E. S. I.) 



2. limosa, Fal. Het. 8. 6 (1820); Meig.; Mcq.; Hal.; Zett. 

 riparia, Desv. Nigra, scutelli setis bis quaternis, alis infuscatis. Long. 

 1^; alar. 3 lin. 



Dusky -black. Front thickly set with bristles. Face short, brownish, 

 very much elevated between the antennas. Thorax often dull rusty- 

 brown. Scutellum long, produced beyond the metathorax, with three 

 bristles at each side and two at the tip. Wings brownish ; costal vein 

 bristly at the base ; radial continued nearly to two-thirds of the inter- 

 val between the subcostal and the cubital, the latter reaching the tip of 

 the wing ; discal transverse vein parted by about twice its length from 

 the prasbrachial transverse vein. Legs thinly hairy. Middle tibiaa 

 thickly armed with spines ; middle tarsi bristly ; second joint of the 

 hind tarsi linear, twice as long as the first. 



Very abundant. (E. S. I.) 



3. humida, Hal. E. M. iii. 328. 3 (1836). Nigra, facie albida, 

 scutelli setis quaternis. Long. 1| ; alar. 3 lin. 



Like L. limosa, but with much fewer and slighter bristles on every part ; 

 one only at each side of the scutellum, which is not so long. Face hoary. 



