132 INSECUTOR INSCITI.5; MDNSTRUUS 



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. subtilis 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 prssscutum dull gray with four 

 dark brown stripes, the lateral pair shorter, the middle pair 

 narrowly bisected by a gray line ; pseudosutural foveas 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 tibiae 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 Cm yellowish, the remaining veins 

 brav/n; 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 M.,, extending into the base of 

 cell M^ ; 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 bocon-jing still broader on the 



