86 INSECUTOR INSCITI;E MENSTRUUS 



able to find any, although tahocnsis and hexodontus were out 

 in swarms and palustris occasional. 



Aedes cataphylla, new species. 



Female. — Integument black. Head with flat white scales on 

 the sides, narrow curved ones on the vertex but mixed with 

 rather broad curved ones, the narrow scales brown, the broad 

 ones white ; on each side of vertex a spot of very narrow, 

 sparse, dark brown scales; erect forked scales black; vertical 

 bristles pale, those along margins of eyes black. Mesonotum 

 with coarse, narrow curved scales, brown, sparsely intermixed 

 with white ; anterior edge and shoulders white ; a white tuft 

 subdorsally centrally on each side, from which a narrow line 

 of scales runs backward ; scales over antescutellar space white. 

 Scutellum with some narrow curved white scales on each lobe 

 and a group of brown and black bristles. Abdomen black, 

 with broad white basal segmental bands, widening on the 

 sides; penultimate segment with some apical white scales; 

 last segment and cerci with white scales intermixed; venter 

 white, rather sparsely scaled, with a medioventral row of oval 

 black spots and subapical sublateral black patches. Wing- 

 scales narrowly cuneiform, black, with many white ones inter- 

 mixed along the costa and first vein, some of the flat appressed 

 scales of the costa being white, forming a distinct patch just 

 beyond base, some of the flat scales of vein 1 white and a 

 few of the long outstanding scales of vein 2 white ; third vein 

 with dense short scales forming a spot at the base, but few 

 or no long outstanding scales, contrasting with the second and 

 fourth veins, which have numerous outstanding scales. Legs 

 black, with many white scales intermixed, especially on the 

 under side, but the tarsi without pale rings ; femora white be- 

 neath and with white knee-spots, intensified by a small black 

 area preceding each. Tarsal claws toothed. Length of wing, 

 4.5 mm. 



Type, Cat. No. 20354, U. S. Nat. Mus. 



A captured female, Fallen Leaf, Lake Tahoe, California, 

 June 11, 1916, taken biting by day in the woods at the south 

 end of the lake. 



