1920] Ludlow — Siberian Anopheles 77 



Anopheles selengensis sp. nov. 



Female. Head black, with a median depression, and on either 

 side are white forked and lanceolate scales forming a well marked 

 bunch, long white scales and bristles on the vertex, projecting for- 

 ward, some smaller dark forked scales at the sides and the margin 

 of the occiput. Antennae black, basal joint black shiny bearing a 

 few small flat upright scales, verticels dark, short, and scanty, 

 pubescence white and plentiful; proboscis black, labellre a lighter 

 brown; palpi dark brown, with outstanding scales at the base, the 

 remainder appressed scales; clypeus dark brown pruinose; eyes 

 black. 



Thorax : prothoracic lobes well separated, scantily covered with 

 small light hairs and dark bristles; mesonotum bluish grey and 

 dark brown, practically black. The grey median broad stripe is 

 pruinose, with a very narrow median brown line extending from 

 the nape almost to the scutellum, where it widens to form the 

 "bare space," and rather ill-defined submedian broader brown lines 

 extending about one-half the way to the scutellum. Laterad to 

 this grey stripe, extending about half the length of the mesonotum, 

 from the scutellum, is, on either side a very dark brown, or black, 

 club-like stripe, and on the lateral parts the integument is very 

 dark, shading into the lighter pleura. The specimen is partly de- 

 nuded but the scales which are fine yellow hairs and have appar- 

 ently been thickly placed, are lacking on the dark club-like parts, 

 are difl^use on the laterad portions, a row of longer hairs and very 

 dark brown bristles on the lateral margins, well marked over the 

 wing joint; scutellum dark but rather toward the grey, a few yel- 

 low hairs, and many dark marginal and submarginal bristles; 

 pleura dark, somewhat lighter than the darker parts of the meso- 

 notum, and show a few bunches of hairs and black bristles; 

 metanotum dark, pruinose. 



Abdomen almost black, well covered with yellow hairs and long 

 yellow bristles, venter dark. 



Legs all dark except a light ventral line on the femora and tibiae. 

 The knee spot if present is reduced to a single row of scales. 

 Ungues all simple. 



Wings clear, slightly infuscated at the spots, which occur at the 

 forks of the second and fourth long veins, at the root of the second. 



