14 COQUILLETT [4J 



ORNITHODES gen. nov. 



Near Tricyphona, but the rostrum about one and a-half times as 

 long as the head ; palpi inserted near apex of the rostrum, eyes densely 

 pubescent, head prolonged backward in the form of a rather long neck, 

 prothorax considerably prolonged forward, antennae sixteen-jointed, 

 tibiae with large spin's at their apices, tarsal claws simple, empodia 

 narrow but rather long; apex of auxiliary vein opposite base of fourth 

 posterior cell, auxiliary crossvein at more than twice the length of the 

 hind crossvein before base of second vein, the latter slightly before the 

 apex of seventh vein ; second vein simple, the third issuing from it 

 slightly before the small crossvein and forking a short distance beyond 

 the latter; five posterior cells, the second petiolate. 



Type. The following species : 



Ornithodes harrimani sp. nov. 



Black, the halteres, posterior margins of the abdominal segments 

 except the first, apices of coxae, trochanters, and bases of femora yel- 

 low ; antennae nearly reaching insertion of wings, slightly tapering to 

 the apex, bearing a few short bristly hairs, first joint about twice as 

 long as broad, the remaining joints except the last one about as long 

 as broad or only slightly longer; head and thorax opaque, gray 

 pruinose, mesonotmn marked with four black vittaa; abdomen slightly 

 polished, its sparse hairs yellowish, claspers transverse oval, one and 

 a-half times as broad as long, destitute of processes, posterior ventral 

 margin of the preceding segment prolonged in the middle in the form 

 of two large tubercles ; wings hyaline, veins brownish, stigma pale 

 grayish, a brown cloud at base of second vein, at apex of auxiliary 

 vein, on marginal crossvein, on veins at bases of both submarginal, 

 first, third, fourth, and fifth posterior cells, and beyond middle of 

 second submarginal cell ; base of first posterior cell directly above base 

 of discal, hind crossvein about half its length before base of discal cell 

 and more than its length before base of fourth posterior cell, discal 

 cell closed. Length, including the rostrum, 15 mm. A male speci- 

 men, collected June 22. 



Habitat. Virgin Bay, Prince William Sound, Alaska. 



Type. Cat. no. 5203, U. S. National Museum. 



Respectfully dedicated to Mr. Edward H. Harriman, to whose gen- 

 erosity we are indebted for the discovery of this and many other inter- 

 esting forms of insect life. 



