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times longer and nearly or quite half its length; the second posterior 
cell itself generally distinctly, sometimes very considerably, more 
than half as long as the intersected apical area of the wing, which 
is fully equal to, if it does not exceed, the breadth of the wing ; 
fifth posterior cell considerably broader at base than just before the 
margin. Sixth longitudinal vein rather closely approximated 
to the fifth. Legs very slender, the femora stouter and slightly 
shorter than the tibiz, three fourths as long as the wings, and the 
tarsi, or at least the hind pair, nearly three fourths as long again as 
the tibie. Abdomen light colored, with feeble markings, consist- 
ing of feeble and simple, generally rather narrow, mediodorsal 
and lateral dusky stripes. 
Length of wings, 10-13.5 mm.; of legs ina 9 having wings 13 
mm. long, as follows: fore femora, 7 mm.; tibiz, 7.75 mm. ; 
tarsi (probably incomplete), 1o mm.; mid femora, 7.5 mm. ; 
tibiz, 8 mm. ; tarsi (perhaps incomplete), 12.5 mm. ; hind femora, 
7-5 mm.; tibiz,8.5 mm. ; tarsi, 14 mm. 
- Florissant, Colorado. Eight specimens, 5 ¢, 3 2; Nos. 4732, 
8066, 8385, 8480, 8869, 10105, 11841, 14145. 
MICcRAPSIS (utzpos, aW’is) gen. nov. 
This genus differs strikingly from Tipula in the character of the 
discal cell, which is somewhat remarkable ; not only is it of ex- 
ceedingly small size, but it is entirely removed from the fifth 
posterior cell, the forking of the fourth longitudinal vein not taking 
place where the great cross vein unites with the final branch of the 
fourth longitudinal vein, but at the inner inferior base of the discal 
cell, which thus becomes quadrilateral and is separated from the_ 
anterior basal angle of the fifth posterior cell by the width of the 
fourth posterior cell. 
The genus is evidently allied to Tipulidea by the brevity and 
obliquity of the praefurca, and should directly follow it. In the 
lack of contact of the discal cell with the fifth posterior cell it is 
like Megistocera, but it differs from that in all the other characters 
by which Tipula is distinguished from Megistocera, and does not 
indeed belong to the Dolichopezini to which Megistocera is 
referred. 
A single species is known, unfortunately represented only by 
a single imperfect specimen. 
