98 PKOCEEDINGS OF THE ACADEMY OF [Part I 



yellow, the tip of the terminal segment dark brown. Antennae of 

 the male elongate; scape and first flagellar segment obscure yellow; 

 flagellar segments dark brown, the extreme tips of the segments a 

 little paler; basal enlargements of the segments conspicuously globu- 

 lar as in the monilifera group. Head brownish yellow. Mesonotal 

 praescutum shiny testaceous yellow with three indistinct reddish 

 stripes; remainder of the mesonotum testaceous yellow. Pleura 

 shiny yellow. Halteres yellow, the knobs a little darker. Legs 

 with the coxae shiny yellow; trochanters yellow; femora brownish 

 yellow, the extreme tips narrowly and indistinctly darkened; tibiae 

 yellowish brown; tarsi dark brown. Wings with a yellowish gray 

 suffusion, cells C, Sc and the wing-base more saturated yellow; 

 stigma oval, pale brown; veins dark brown. Venation: Sc2 extend- 

 ing to just before midlength of Rs; Rs very gently arcuated to nearly 

 straight, about equal to R2+3; cell R2 comparatively small, Ri+z 

 in ahgnment with Rz; cell 1st M2 elongate-pentagonal; petiole of 

 cell Ml about one-half longer than m; m-cu distinct. Abdomen 

 obscure brownish yellow, the basal tergites and the sternites brighter; 

 eighth sternite and bases of eighth tergite and ninth sternite black; 

 hypopygium reddish yellow. Male hypopygium with the caudal 

 margin of the ninth tergite tridentate, the median lobe more acute 

 than the subequal lateral lobes; apex of the median lobe directed 

 slightly dorsad, of the lateral lobes slightly ventrad. Ninth sterno- 

 pleurite very reduced, not at all conspicuous. Eighth sternite very 

 extensive, jutting caudad of the level of the other elements of the 

 hypopygium, broad, the caudal lateral angles produced caudad into 

 two very conspicuous spines that are directed caudad and dorsad; 

 immediately cephalad of each of these lobes is a smaller conical 

 tooth. 



Habitat. — Peru. 



Holotype, cf, Yurimaguas, March 31, 1920 (H. S. Parish). 



Tipula armatipennis napoensis subsp. n. 



Allied to T. armatipennis; head pale yellow, the vertex with a 

 narrow brown median line; general coloration fulvous yellow; wings 

 yellowish gray, the costal and subcostal cells more saturated; ^2 

 subperpendicular to the tip of R2+3] valves of the ovipositor sub- 

 fleshy. 



Female. — Length 18 mm. ; wing 14.5 mm. 



Frontal prolongation of the head obscure yellow; palpi elongate, 

 especially the terminal segment, pale yellow. Antennae bicolorous; 

 scape and first flagellar segment obscure yellow: remaining flagellar 

 segments with the basal swelling black, the remainder of each seg- 

 ment brownish yellow, on the terminal segments darkening to 

 yellowish brown. tHead pale yellowish, the vertex with a narrow 

 brown median line. Mesonotum light yellow, without darker mark- 

 ings of any kind. Pleura light yellow. Halteres brownish yellow, 

 the knobs dark brown. Legs with the coxae and trochanters light 



