232 
beneath ; above covered heavily with dark transverse markings, con- 
sisting on each of the principal segments of a broad bow, open 
anteriorly, and a couple of subconfluent or confluent median 
rounded spots united therewith, these leaving a pair of anterior 
laterodorsal pallid spots and the outer posterior corner of each 
segment pallid; the markings become confused on the basal and 
apical segments, the latter of which are wholly dark. 
Named in memory of the early American naturalist, William 
Maclure. 
Length of wings, 23 mm.; fore and mid femora, 10.5 mm. ; 
fore and mid tibiz, 12 mm.; mid tarsi, 15 mm.; hind femora, 
13 mm. 
Florissant, Colorado. One @ specimen, No. 7783. 
Tipula heilprini. 
BINS tig 
Wings nearly four times as long as broad, with generally very 
faint, occasionally tolerably distinct clouded dark markings 
disposed much as in Z. macluret, and brought into relief by 
similarly faint pallid markings above the discal cell. Auxiliary 
vein terminating at the middle of the inner marginal cell ; post- 
stigmatal cross vein slightly oblique, brief; trapezoidal cell mod- 
erately elongate. Praefurca of normal length. Petiole of second 
posterior cell short, not more, generally much less, than half 
the length of the discal cell; fifth posterior cell generally, but not 
always, considerably broader at base than at margin, the sides 
straight. Discal cell of medium size, twice as long as broad. 
Sixth longitudinal vein moderately distant from the fifth ; seventh 
longitudinal vein half as long as the wing. Legs very slender, the 
femora about three fifths the length of the wings, and stouter than 
the tibize, which slightly exceed them in length; while the tarsi, or 
at least the fore tarsi, are but a little more than a fourth longer 
than the tibiz. Abdomen light colored, with dark linear mark- 
ings somewhat variable in their width; in general there is a 
median and, on either side, a lateral stripe, with another midway 
between them or approaching one or the other ; and excepting the 
subdorsal stripes, which are sometimes hardly seen and always 
slender when present, the others may vary in breadth ; the incisures 
also are infuscated. 
