AKT. 10. XEW SPECIES OF THE FAMILY TIPULIDAE ALEXANDER. 15 



dark brown, the second scapal segment paler apically; flagellar seg- 

 ments short-cylindrical, crowded. Head dark with a yellowish gray 

 pruinosity. 



Mesonotal praescutum yellowish gray with three conspicuous dark 

 brown stripes ; remainder of mesonotum dark brownish black. Pleura 

 gray. Halteres pale yellowish testaceous, the knobs darker. Legs 

 with the coxae gray; trochanters obscure yellow; legs brownish black, 

 the femoral bases obscure brownish yellow. Wings with a faint 

 brownish gray tinge; stigma very conspicuous, dark brown; veins 

 dark brown. Venation: Sc^ ending opposite one-third the length of 

 R2+3; Rs long, angulated and sometimes slightly spurred at origin; 

 cell i?3 broadly sessile; i?2 about its own length from the tip of R^; 

 deflection of R^^.^ a little shorter than r-m; deflection of R^ angulated; 

 cell J/i present; cell 1st M^ open; first section of J/3 about one-half 

 the fusion of Gu^ and M^. 



Abdomen dark brown, gray pruinose. Male hypopygium with the 

 pleurites stout, the outer angles produced caudad into a blunt, 

 weakly spinous lobe; two pleural appendages, both small, the outer 

 appendage flattened, pale; inner appendage oval in outline, the apex 

 with large, conspicuous spines. There are no apparent developments 

 from the base of pleurites as in other species of the genus. Anal 

 tube broadly rounded at apex. 



Habitat. — Washington, Colorado. 



Described from 10 males and females collected at Longmire Springs, 

 Mount Rainier, Washington, June, 1917 (H. G. Dyar); and one 

 female from Boulder, Colorado (T. D. A, Cockerell) . 



Type.—M^ile, Cat. No. 26095, U.S.N.M. 



TEPULA PEREXIGUA, new species. 



Size very small (mng female, S mm.) ; antennal scape yellow; 

 head gray; mesonotum yellow with pale bro\\Ti stripes; wings brown- 

 ish gray, the stigma darker browii; abdominal tergites obscure yellow, 

 marked medially with darker brown; valves of ovipositor compara- 

 tively short and very compressed. 



Female. — Length 8.8 mm.; wing 8 mm. 



Frontal prolongation of the head obscure yellow; nasus distinct; 

 palpi reddish brown basally, the terminal segments passing into dark 

 brown. Antennae with the scape and first flagellar segment light 

 yellow; remaining flagellar segments brown, the basal enlargements 

 a little darker brown. Head light gray, the center of the vertex 

 faintly infuscated. 



Pronotum yellow, narrowly infuscated medially. Mesonotum 

 gibbous; praescutum yellow with three pale brown stripes, the median 

 stripe indistinctly split behind; scutum yellow, each lobe with a 



