472 PROCEEDINGS OF THE ACADEMY OF [Sept., 



ened. Legs with the coxae dull yellow, a little suffused with brown 

 on the anterior outer face; trochanters yellowish brown; femora 

 dull yellow, the tip narrowly dark brown; tibiae dull yellowish 

 brown, soon passing into dark brown; tarsi dark brown. Wings 

 grayish subhy aline; stigma moderately indistinct, brown. Venation 

 (see Plate XVI, fig. 3); Rs long; cell Mi petiolate; basal deflection 

 of Cui and the cross-vein yn-cu beyond the fork of M. 



Abdomen with the tergites brownish yellow, the caudal margin of 

 each sclerite dark brown, sending a broad median line forward, 

 forming a ±-shaped mark; on the apical segments only the median 

 vitta persists; lateral margins of the tergites with the anterior half 

 grayish, the caudal half dark brown; an interrupted median line 

 on the sternites. 



The paratype is quite similar to the type with the following excep- 

 tions and additions: antennal flagellum dark brownish black; the 

 thoracic stripes very dark brownish black with the ground-color 

 light yellow; the pattern on the abdomen is indistinct but indicated. 



Habitat. — Northern United States and Canada. 



Holotype, 9 , Mt. Washington, N. H. 



Paratype, 9 , Farewell Creek, Southern Saskatchewan, Canada; 

 September, 1907. 



The type is in the collection of the Boston Society of Natural 

 History; the paratype is in the collection of the author. 



This small Tipula bears a remarkable resemblance to certain 

 species of Nephrotoma, especially N. vittiila Loew, which is likewise 

 a northern form. The thoracic stripes in vittula are described as 

 being black, but specimens in the collection of the Boston Society 

 of Natural History have the stripes rich reddish chestnut and are 

 very similar to the present fly; the broad yellowish white median 

 thoracic stripe, the transverse caudal brown margins to the abdominal 

 tergites and the venation will easily distinguish the forms. 



Tipula penobscot sp. n. 



Coloration gray and brown; antennae rather short, subunicolorous; 

 thorax light gray, the stripes quite indistinct, brown; win^s sub- 

 hyaline, the tip broadly dark brown; an indistinct brown band 

 along the cord; wings with the tip of vein R2 atrophied or nearly so; 

 male genitalia with the ninth tergite subquadrate, caudal margin 

 deeply and broadly concave with a sharp median tooth; ninth 

 pleurite small, complete. 



Male.— Length, 11 mm.; wing, 12.8 mm.; antennae about 3.3 mm. 



Frontal prolongation ' of the head rather long, yellowish brown; 



