350 DIPTEROUS GENUS TIPULA 



which are broad in their basal three-fifths — viewed laterally — , deeply sinuate 

 posteriorly, apical two-fifths slender, strongly angulate outwardly — poste- 

 rior aspect — , apical part straight, projecting beyond the hypopygium and 

 with their tips curved backward. Pleural suture absent. Upper apical 

 appendage leaflike, pointed; middle appendage oblong-quadrate, united 

 in its basal third with the former, a short, spinelike process extends from 

 Its anterior margin near the base; the lower appendage consists of a sub- 

 quadrate basal portion terminating in two spatulate processes, the upper of 

 which is a trifle longer, both rounded at tip and fringed with a row of short, 

 stiff hairs. Lateral appendages with two processes, the upper large, 

 strongly chitinized, pedicle wide, enlarged at tip, hatchet-shaped — see 

 figure — lower process membranous, pendulous, tapering, with a small, tri- 

 angular tooth on its inner margin near the base; the posterior margin of the 

 lateral process between these two processes is obtusely angulate. Legs long 

 and slender, yellow, apices of femora and tibiae and last two-thirds of tarsi 

 infuscate. 



Wings rather wide, grayish subfuscous; stigma and spot over beginning 

 of praefurca dark fuscous, apical three-fifths of first and second submarginal 

 cells infuscate, a whitish spot in second basal cell at about its outer third 

 and at each end of which, the color of the wing is a trifle darker, an elongate 

 pale fuscous spot about middle of anal cell limited at each end by a white 

 spot, a white spot before and a more conspicuous larger white, area beyond 

 the stigma, a darker shade extends from the latter across the base of the 

 second submarginal and first posterior cells. 



9 . Length of body 22.5 mm. 



Antennae when bent backward scarcely attaining base of wings; joints 

 1 to 4 yellow, following joints yellowish-gray, all joints of flagellum dis- 

 tinctly fuscous at base. Abdomen sordid yellowish fuscous, lateral fuscous 

 line not distinct; seventh and eighth tergite grayish white. Ovipositor 

 testaceous, upper valves long, bladelike, rounded at tip, longer than the 

 basal piece; lower valves longer than the upper, very narrow, parallel, 

 obtusely rounded at tip. Wing pattern more pronounced. 



Holotype: cf; Aweme, Manitoba, Canada. August 4, 1912. 

 (N. Criddle.) 



Allotype: 9 ; Aymer, Quebec, Canada. April 24, 1913. (J. 

 T. Beaulue.) 



Paratypes: Ottawa, Canada. June 28, July 11 and 13. 

 Aymer, June 24. Aweme, Manitoba, June 27 and 28, July 30, 

 1913. In author's collection. 



In the coloration of the antennal flagellum this species resembles 

 Tipula hebes, from which it is distinguished by the very differ- 

 ent processes of the lateral appendage. The antennal flagellum 

 is more inclined to fuscous. The formation of the bladelike 



