ART. 2 NEW UNDESCRIBED CRANE FLIES ALEXANDER 9 



wings whitish subhyaline, with four conspicuous brown costal areas 

 and sparse markings elsewhere on the wing. 



Female. — Length, 6.5-7.5 mm. ; wing, 8.2-10 mm. 



Rostrum and palpi black. Antennae black, the basal half of the 

 first flagellar segment yellow; flagellar segments oval, becoming 

 smaller outwardly. Head gray, the center of the vertex marked 

 with black. 



Mesonotal praescutum gray with three conspicuous brown stripes, 

 the median stripe narrowly split by a capillary pale line, the 

 cephalic end of the stripe entire; scutum gray, the lobes variegated 

 with brown; scutellum gray; postnotum brown, sparsely pruinose. 

 Pleura gray. Halteres relatively short, pale yellow, the knobs dark 

 brown. Legs with the coxae brown, darker basally; trochanters 

 yellow; femora yellow, a little darker outwardly, the tips broadly 

 dark brown, preceded by a slightly narrower clearer yellow ring; 

 tibiae light brown, the extreme bases and the slightly broader tips 

 infuscated; basitarsi light brown, passing into darker brown, the 

 remaining tarsal segments dark brown. Wings whitish to whitish 

 subhyaline, sparsely variegated with brown, including four larger 

 costal blotches, the second at the supernumerary cross vein in cell Sc^ 

 the third at the tip of Sc-^ and origin of ^s, the fourth the stigmal 

 area, barely confluent with a circular spot at the fork of Rs; cord 

 and outer end of cell first M^ narrowly seamed with darker brown; 

 paler gray marginal clouds on vein M^ and all veins beyond, largest 

 and most conspicuous on the anal veins; smaller but darker mar- 

 ginal spots at ends of veins R^ and R^^^; a few scattered brown dots 

 in cells i/, Gu., and the anal cells, not more than four or five in a 

 single cell, none in the radial field; veins dark brown, C, Sc, and R 

 more yellowish in the interspaces. Venation : Sc relatively short, 

 /S'Ci ending about opposite one-fourth the length of Rs, Sco lacking, 

 unless considered as being represented by the so-called supernumer- 

 ary cross vein at midlength of cell Sc; Rs nearly straight; cell 

 first M2 gently widened outwardly, longer than vein M^ beyond 

 it; m^cu before the fork of M, approximately equal to or shorter 

 than the distal section of Cu-^^. One paratype has an adventitious 

 cross vein in cell ^3 of both wings. 



Abdominal tergites brownish yellow, variegated with dark brown. 

 In other specimens the segments are dark brown, narrowly mar- 

 gined caudally with obscure yellow. Ovipositor with the basal 

 half of the genital segment dark, the apical half obscure yellow. 

 Valves horn color, the tergal valves relatively small, slender, gently 

 upcurved, the tips acute. 



Habitat. — Colorado. Holotype., female, Tennessee Pass, July 24, 

 1917 (J. M. Aldrich). Paratopotypes, 2 females. 



Ty^e.— Female, Cat. No. 40324, U.S.N.M. 



55413—27 2 



