229 



Nephrotoma brevioricornis (Doane) . One d" , in bog, September 

 5. 



Tipula umbrosa Lw. Common in the swamps and along wet 

 places near trails, August 28-September 10. 



T. mainensis Alex. On higher land, along trails and on lower 

 slopes of mountains, August 28-September 10. 



T. fragilis Lw. One small cf of what appears to be this species; 

 Western Mountain, on wet cliffs, 850 feet, September 8. 



T. hermannia Alex. Along trails, August 27-September 8; 

 among the boulders in Valley Cove at low tide, September 3 ; in 

 spider's web, Swamp, September 1. 



T. trivittata Say. Females only, Gorge, September 12. 



T. ultima Alex. In numbers along the trails, the first of the 

 season on September 8, very common on the 12th. 



T. (Cinctotipula) algonquin Alex. Common and very character- 

 istic of the lower slopes of the mountains, flying about among the 

 Juniperus; Flying Mountain, August 27; Western Mountain up 

 to 700 feet, September 8. 



Besides the Tipulidae mentioned, Bittacomorpha clavipes 

 (Fabr.) and Ptychoptera rufocincta O. S. (Ptychopteridae) oc- 

 curred in the swamps, September 1-4. 



Descriptions of New Species. 

 Dicranomyia spinifera, sp. no v. 



Allied to D. halterata O. S.; head gray; mesonotal praescutum brownish yellow 

 with three confluent dark brown stripes, the surface sparsely pruinose; pleura 

 pruinose, the sternopleurite darkened; halteres and abdomen elongate; wings 

 with Sci longer than m-cu; caudal margin of the ninth tergite of the male 

 hypopygium with a deep V-shaped notch; a single spine on rostrum of ventral 

 dististyle; anal tube with a conspicuous group of seven or eight spinous setae. 



Male. — Length 7.5-8 mm.; wing 7.8-8 mm. 



Female. — Length 8.5 mm. ; wing 8.5 mm. 



Rostrum and palpi brownish black, the former pruinose. Antennae black 

 throughout; flagellar segments oval, the verticils slightly longer than the seg- 

 ments. Head light gray. 



Pronotum dark brown, gray pruinose. Mesonotal praescutum brownish 

 yellow with three confluent darker brown stripes, the scutal lobes similarly 

 colored; median area of scutum and the scutellum paler; postnotum pruinose. 

 Pleura pale, sparsely pruinose, the postnotal pleurotergite and the anterior 

 sternopleurite dark brown, pruinose. Halteres elongate, pale, the knobs dark 

 brown. Legs with the coxae yellow, very sparsely pruinose; trochanters pale; 

 femora brownish yellow, darkening outwardly; tibiae and tarsi gradually pass- 

 ing into dark brown. Wings with a pale brown tinge, the stigma a trifle darker ; 

 veins dark brown. Venation: Sci ending opposite the origin of Rs, Sc^ 



