THE CANADIAN ENTOMOLOGIST 69 
wliich the sclerite is elevated into a transverse ridge. Eighth 
sternitc unarmed. 
The female is similar to the male but the wings are greatly 
atrophied, the legs, espeeially the femora, incrassated and the 
ti[)ice and tarsi shortened. The abdominal tergites are brown with 
a broad, basal median area of black on each segment, the caudal 
margins brighter; lateral margins of the segments pale yellowish, 
sublaterally with a blackish band. Ovipositor of the arctica 
type, the ends of the valves rather blunt, the dorsal edge with 
four or five sharp teeth, the lateral margin with seven or eight 
sin;ilar but larger teeth. 
Habitat. — Alaska. 
Holotype.—d^, Koyukuk R., Alaska; Lat. 67-69 N.; Long. 
151 W. (W. J. Peters). Summer of 1901. 
Allotopotype. — • 9 . 
Types in the collection of the U. S. National Museum. 
Tipula macrolaboides, sp. n. 
Macrolahis group; related to T. macrolahis Loew of North- 
eastern North America but differing in the male hypopygium, the 
pleural lobes unarmed at their tips; the ninth tergite with an 
acute median lobe, the broad, lateral lobes deeply notched to 
form two smaller lobes. 
Male. — Length 17-17 mm.; wing 17-18.6 mm. 
Close to macrolabis except as follows: 
Antenna; of the type light brown throughout, the paratype 
uniform pale throughout. 
Praescutum light gray with four narrow, chestnut brown 
stripes, the median one divided by a \ery broad ground vitta, 
pointed anteriorly ; lateral stripes shorter, continued back on to the 
scutal lobes. 
Male hypopygium with the ninth tergite extensive, with a 
broad and deep dorsal depression; produced caudad into a com- 
pressed median blade with a sharp dorsal edge or carina; the 
broad lateral lobes are deeply notched by a rounded incision to 
form two smaller lobules on either side, the proximal lobule longest, 
shiny, the lateral one with a sharp edge that is provided with a few 
stout bristles'. Ninth pleurite complete, the caudal ventral angle 
produced caudad and slightly dorsad and proximad as a promi- 
