INSECUTOR INSCT'fi;Tv MRNSTRUUS 167 



in the females sparse dark brown scales persist, replaced by 

 white ones low down on the sides. Abdomen above with dark 

 brown, not black, scales and narrow basal segmental whitish 

 bands. Legs black, the femora with whitish scales especially 

 beneath. Wings hyaline, the veins dark brown, denuded in our 

 specimens. 



Genitalia. — Side pieces about three times as long as wide, 

 tips rounded. Clasp filament slender, uniform, with long in- 

 serted terminal spine. Apical lobe of side piece conical, small, 

 rugose, with few fine setae ; basal lobe high-conical, setose, the 

 setse long on the basal aspect, without a spine. Harpagones 

 long, narrow, setose at base, narrowed at apical third ; filament 

 long, sickle-shaped, with a double angular membrane at the 

 base as in taho'cnsis and altiusculus. Harpes peculiarly modi- 

 fied, tubular, with angular open ends and thickened rims. Unci 

 large, cylindrical, the tips pointed and inbent. Basal append- 

 ages moderate, with seven stout setse. 



Types, two males and two females. No. 21561, U. S. Nat. 

 Mus. ; Greenland (through Dr. F. Meinert). Two fresher 

 specimens are very similar, but we do not venture to identify 

 them positively without the male; Kangerdlooksoah, Inglefield 

 Gulf, Greenland, August 9, 1908 (C. C. Craft). 



These specimens agree in a general way with Zetterstedt's 

 diagnosis of his Culex nigripes from Lapland. Possibly they 

 are the same species ; but with the generally local distribution 

 of these A'edes, we cannot make that assumption. The male 

 genitalia of nigripes are unknown. 



Theobald (Mon. Culic, ii, 93, 1901) gives the distribution 

 of nigripes as "Lapland ; Greenland ; Virgin's Bay, Alaska 

 (T. Kincaid) ; Hudson's Bay (Walker) ; Kashmir, India, 

 13000 feet." He gives the synonymy thus : 



Culex nigripes Zetterstedt (Lapland). 



impiger Walker (Hudson's Bay). 

 implacabilis Walker (Hudson's Bay). 

 incidens Thomson (?) (California), 

 yar. sylvae Theobald (England). 



