132 INSi;CUTOR INSCITI^ MENSTllUUS 
Holotype, male, Dripping Spring, Organ Mountains, New 
Mexico, April 23, 1898 (T. D. A. Cockerell) ; at light. 
Type, Cat. No. 19982, U. S. Nat. Mus. 
This species suggests T. suhtilis Doane, T. flavicoma Doane, 
and related species, but is readily separated by the structure 
of the male genitalia. 
Tipula rotundiloba, new species. 
Male. — Length, 12 mm. ; wing, 14 mm. 
Palpi dark brown. Frontal prolongation of the head dull 
yellow with a sparse grayish bloom; nasus short but distinct. 
Antennae with the three basal segments yellow, the third a lit- 
tle darkened at the tip ; flagellar segments quite elongated, very 
slightly excised beyond the basal enlargement, dark brown 
passing into brownish yellow at the tip of each segment, the 
terminal segments more uniformly dark brown. Head dull 
gray with an indistinct median line. 
Thoracic dorsum with the prsscutum dull gray with four 
dark brown stripes, the lateral pair shorter, the middle pair 
narrowly bisected by a gray line ; pseudosutural f ovese a dusky 
point; scutum grayish brown; scutellum and postnotum light 
gray. Pleura yellow with a dull gray bloom. Halteres pale 
brownish yellow, the knob darker brown. Legs with the coxae 
light gray; trochanters light yellow; femora and tibi^ dull 
yellow, narrowly tipped with brown ; tarsi brown. Wings with 
a strong grayish yellow tinge, the costal area dull yellow, the 
stigmal area brown; vein Cu yellowish, the remaining veins 
brown ; a broad vitreous band before the cord, largest before 
the stigma in cell ist R^ and as a conspicuous blotch at the tip 
of cell R and base of cell ist Mo, extending into the base of 
cell M4 ; in the left-hand wing of the type, the base of vein M^ 
persists as a slight spur. 
Abdominal tergites dull brownish yellow with a dark brown 
dorsal line that broadens out at the end of the second segment 
so as to cover most of the sclerite ; segments 3 to 6 dark brown, 
narrowly margined caudally, and broadly laterally, with dull 
brownish yellow, this margin becoming still broader on the 
