118 INSECUTOR INSCITI^ MEJNSTRUUS 



Aedes triseriatus Say. 



A single female was taken at Missoula. This is the eastern 

 tree-hole species and was hardly to have been expected in the 

 Rocky Mountain region. At Kaslo, British Columbia, on 

 Kootenai Lake, A. varipalpus was the tree-hole inhabiting 

 form. This is not listed by Parker. 



Aedes pullatus Coquillett. 



This name is used in a general sense to cover the black- J 

 legged species of high altitudes. The true pullatus doubtless' 

 occurs, as we have it from Juliaetta, Idaho, but other similar 

 species have been confused. Solitary rubbed specimens re-' 

 ferable to the group were taken here and there, but without 

 males or larvae certain determination cannot be made. These' 

 species fly in May, and, at the time of my visit, had mainly 

 disappeared. 



Aedes prodotes, new species. 



Mesonotum gray at the sides, a dark brown shade over the 

 disk ; in this two narrow lines of small dark brown scales ; 

 short lateral stripes posteriorly ; area of antescutellar space light 

 gray. Abdomen black with basal segmental white bands ; 

 venter whitish scaled with medioventral black stripe, crossed 

 by apical segemental black bands. Legs black ; femora white 

 below nearly to tip ; knee-spot white ; tibiae with a few gray 

 scales. Wing scales black. Palpi, antennae, and proboscis 

 black. 



Genitalia (see Plate II). — Sidepiece with a well-developed 

 apical lobe ; basal lobe conical, setose, with an accompanying 

 single spine; harpago long, slender, curved, uniform; filament 

 long, angularly expanded on one side at base, then tapering to 

 a curved point. 



Type, male, No. 31546, U. S. Nat. Mus. ; Bozeman, Mon- 

 tana, May 7, 1907 (R. A. Cooley) ; another male is the same, 

 Banff, Alberta, 1908 (N. B. Sanson), but the vestiture of the 

 mesonotum is indistinct. 



The female adult is apparently indistinguishable from 

 pullatus or tahocnsis The male genitalia are similar to lazar- 

 t'nsis, but differ slightly in the shape of the filament of the 



