62 THE CANADIAN ENTOMOLOGIST 



ation : cell R2 sessile or very short-petiolate ; cell M\ lacking by the 

 fusion together of veins M\ and M2. 



Abdomen dark brown, the sternites paler; female ovipositor 

 long, brownish yellow. 



Habitat. — Northeastern United States. 



Holotype.— d", Bools Hillside, Ithaca, N.Y., June 4, 1917, 

 (Alexander) . 



Allotopotype. — 9 . 



Paratopotypes.—S d's, 2 9 s, June 4-13, 1917. 



Paratype.—d", McLean, N.Y., May 31, 1913. 



Type in the collection of the author. 



Readily distinguished from L. teniiicornis O.S., its closest ally, 

 by the lack of cell Mi of the wings. The usual flight-period of the 

 species is presumably in late May and the first week of June. The 

 season of 1917 was very cold and backward, at least two weeks 

 late by mid-June. 



Sub-family TipulincB. 

 Tribe Tipulini. 



Tipiila aperta, n. n. for T. imperfecta Alexander. 



(Proc. Acad. Nat. Sci. Phila., Sept., 1915, p. 484-485) not 

 T. imperfecta Brunetti (Rec. Indian Museum, vol. 9, 1913, p. 

 260). 



Tipula sackeniana, sp. n. 



Tricolor group; close to T. tricolor Fabr. ; coloration reddish 

 brown; male hypopygium without a pencil of reddish hairs on the 

 sides of the caudal margin of the ninth tergite. 



Male. — -Length 16.8-17.5 mm.; wing 15.5 mm. 



Female. — Length about 18 mm.; wing 17.5 mm. 



Frontal prolongation of the head with the dorsal half pale 

 brownish yellow, the ventral portion darker, with a dark, lateral 

 line; palpi dark brown. Antennae with the scape dark brown; 

 flagellar segments light yellow, the basal enlargement brown. 

 Vertex light gray in front and \ery narrowly along the inner 

 margin of the eyes; remainder of the vertex brownish gray with a 

 narrow, brown line; an orange spot on the sides of the vertex at 

 the narrowest part; occiput similar in colour. 



