INSECUTOR INSCITI/^ MKNSTRUUS 171 



The males were observed swarming on a hillside overlooking 

 the lake, in forest, about the edges of Ceanothus bushes. The 

 flight occurred just after sunset, when it was just becoming 

 difficult to see clearly in the shade of the bushes, although the 

 sun was still shining on distant hilltops. This represents about 

 the normal time of swarming, and not unusually early, as with 

 the other Californian species. 



Aedes (Heteronycha) palustris Dyar. 



I have shown that this may be considered as a race of 

 fitchii Felt and Young (Ins. Ins. Mens., viii, 117, 1920), Aedes 

 fifcliii palustris Dyar. 



Additional data are as follows : Tahoe City, California, 

 June 14, 17, 1920 (H. G. Dyar) ; Truckee, California, June 21, 

 1920 (H. G. Dyar) ; Summit, Placer County, California, June 

 10, 24, 29, 1920 (H. G. Dyar) ; Lakes Center Camp, Plumas 

 County, California, July 1, 3, 1920 (H. G. Dyar) ; Camp El- 

 well, Plumas County, California, June 24, 27, 1920 (H. G. 

 Dyar) ; Crater Lake, Oregon, July 28-30, 1920 (H. G. Dyar). 



The Crater Lake specimens are all females, some large; 

 but as they all have many white scales on the wings and much 

 gray on the sides of the mesonotum, I have classed them as 

 palustris. The Crater Lake fauna has peculiarities of its own, 

 as remarked above under masamae, and further investigation 

 of the palustris would undoubtedly prove of interest. 



Aedes (Taeniorhynchus) varipalpus Coquillett. 



Additional data are as follows: Dunsmuir California, 

 August 1, 1920 (H. G. Dyar) ; Hoodsport, Washington, July 

 6, 7, 1920 (H. G. Dyar) ; Lake Cushman, Washington, July 3, 

 4, 1920 (H. G. Dyar) ; Okanogan, Washington, July 19, 1920 

 (H. G. Dyar) ; Mission City, British Columbia, July 14, 1920 

 (H. G. Dyar). 



Aedes (Ecculex) vexans Meigen. 



No additional specimens of this species were taken in the 

 mountains proper. It appertains to the lower levels, being one 

 of the commonest flood-pool species of river valleys. 



