574 NEW YORK STATE MUSEUM 



July numerous pupal cases of an unknown species were seen sticking out 

 between the boards which covered the bank of the creek beside the 

 hatchery. Many larvae and pupae of the singular Bittacomorpha 

 clavipes were collected from the rotting vegetation in little shallow 

 bays in the borders of Little Clear creek, where they were very 

 abundant; the imagos were seen commonly, also, gliding slowly along 

 through the air with a singularly phantom-like appearance and motion. 

 The few that retained their six caducous legs after pinning are in the 

 state collection at Albany. 



Chironomidae and Culicidae — gnats, mosquitos, midges, etc. These 

 families were abundantly represented, and a goodly number of species 

 were reared, but, unfortunately, there has not been opportunity for the 

 preparation of descriptions in time for incorporation into this report. 



Mycetophilidae. During the last days of our session the large A s i n - 

 dulum montanum Roeder was common in the hatchery windows. 



Simuliidae. The single, unobtrusive species, S. venustum Say, 

 was very common; during the earlier part of our session the hatchery 

 windows, specially the windows nearest the inflow pipes, swarmed 

 with them. Some new observations on the oecology and habits of the 

 black fly in its earUer stages are recorded on pages 407-8 and illustrated 

 in plate 15, figures 9-1 1, 18-20. 



Stratioinyiidae. Soldier flies. But few specimens were taken belong- 

 ing to this family. These belonged to two very interesting species, 

 one to our largest and handsomest, Stratiomyia badius Walk., 

 whose larva is described on page 576 ; and the other, one of the smallest 

 members of the family, representing a new genus and species, is described 

 below by D. W. Coquillett, and named by him Zabrachia polita. 



JSmpididae. A new genus and species was found in its immature 

 stages associated with Simulium in rapids and reared: it is de- 

 scribed below by Mr Coquiflett as Roederiodes juncta. 

 Hilara mutabilis Loew was common about the shores of Lake 

 Clear during the last week in June. Little companies would start before 

 one's feet when approaching the edge of the water, disperse and settle 

 again near by. 



Sciomyzidae. Two interesting swale flies, Sepedon fuscipen- 

 nis Loew and Tetanocera pictipes Loew, were reared in 

 large numbers. Their larvae and pupae are figured and described here- 

 with. These were from below the hatchery on Little Clear creek. Above 

 the hatchery, nearer the railroad in the natural meadow beside the water, 

 were collected, while sweeping, several additional species of Tetan o- 



