456 COQUILLETT 



nearly linear, about three times as long as greatest width, tapering to a 

 point at apex, front femora only slightly thickened, no black bristles on 

 their under sides nor on inner sides of the front tibiae ; wings hyaline, 

 unmarked. Length, 5 mm. A specimen of each sex, collected July 11. 



Habitat. — Popof Island, Alaska. 



Type. — Cat. no. 5253, U. S. National Museum. 



This genus has not heretofore been recorded from this Continent. 

 The present species would fall in the genus Okenia as defined by 

 Becker (Berliner Ent. Zeitsch., 1894, p. 141), but as that name is 

 preoccupied in the Mollusca, the species previously referred to it may 

 be transferred to Pogonota^ with which they agree except in a few 

 trifling particulars. 

 Cordylura praeusta Loew. 

 Cordylura prceusta Loew, Berliner Ent. Zeitsch., p. 96, 1864. 



Berg Bay, Alaska : a single specimen, collected June 10. Origi- 

 nally described from Canada, and has been recorded from New Jersey. 

 The U. S. National Museum possesses a specimen collected by Mrs. 

 A. T. Slosson at Franconia, New Hampshire. 



Cordylura vittipes Loew. 



Cordylura vittipes Loew, Berliner Ent. Zeitsch., p. 272, 1872. 



Metlakahtla, June 4; Berg Bay, June 10; Sitka, June 16; Yakutat, 

 June 21; Popof Island, Alaska, July 8 : Seven specimens. Orig- 

 inally described from Sitka. 



Cordylura variabilis Loew. 



Cordylura variabilis Loew, Zeitschrift Ges. Naturw., p. 326, 1876, 



Metlakahtla, June 4; Berg Bay, June 10; Virgin Bay, June 20; 

 Kukak Bay, July 4 ; Popof Island, Alaska, July 1 1 : Seven speci- 

 mens. Originally described from Massachusetts. Specimens are in the 

 U. S. National Museum collection, ranging from New Hampshire to 

 North Carolina, and westward to Texas and Colorado. 

 Orthochaeta pilosa (Zetterstedt). 



Cordylura pilosa Zetterstedt, Insecta Lappon., p. 732, 1840. 

 Orthochata pilosa Becker, Berliner" Ent. Zeitsch., p. loi, 1894. 



Metlakahtla, Alaska : A female specimen, collected June 4. This 

 European species has not heretofore been reported from this country. 



Bexamitocera cornuta (Walker). 



Lissa cornuta Walker, List Dipt. Ins. Brit. Museum, iv, p. 1047, 1849. 



Yakutat, Alaska : A male specimen, collected June 2 1 . Originally 

 described from the Albany River, British America. 



