260 PR0CEEDIN08 OF THE NATIONAL MUSEUM. vol.49. 



listed as grandis a single male specimen collected at Yakima, Wash- 

 ington. 



During the past season (1913) I found Archilestes abundant on 

 Satus Creek, Washington, from August 1 until October frosts killed 

 the brood at the height of its numbers. A few specimens were taken 

 in my dooryard 2 miles north of Sunnyside, Washington, which had 

 emerged from nymphs brought down from the Yakima River m the 

 Sunnyside irrigation canal, on whose bank my home stood. Probably 

 because of the widely scattered points at which Archilestes has been 

 taken in the Yakima Valley, it is found throughout the lower 

 stretches of the Yakima lliver and its tributaries. However, as no 

 record exists of specimens having been taken north of California, 

 this is probably an isolated brood, perhaps the northern outpost of 

 the genus. 



As there are certain differences between the specimens of the brood 

 from Satus Creek, Washington, and specimens of grandis from Mexico 

 which I have examined, and as these correspond fairly well with 

 McLachlan's description of californica, I have used the name mZi- 

 fornica. At first I thought their isolation had given them perhaps 

 the characters of a local race and so inclined to classify them as 

 grandis, but on collecting in the Sacramento Valley and after study- 

 ing the specimens of Arcliilestes in the Stanford collection, which have 

 been taken around Palo Alto, I am inclined to think that californica 

 is a good species, as all the California material is identical with the 

 Yakima Valley specimens. The main differences are that the speci- 

 mens of californica are smaller, lighter colored, and have less metallic 

 coloration than the true grandis forms. McLachlan states that the 

 costa and median veins in the californica type are yellow. In some 

 of my Yakima material, which is old and pruinose, the subcostal vein 

 is light brown, though none have any of the veins distinctly yellow. 



The following is a brief description of specimens from Satus Creek, 

 Washington : 



ARCHILESTES CALIFORNICA McLachlan. 

 Figs. 1-2G. 



Male (figs. 1 and 2). — Labrum in teneral specimens pale brown, 

 becoming greenish in the older males; frons pale brown on vertical 

 surface, and brown with a black transverse line on the horizontal 

 surface. Vertex brown, with a complex pattern m black. In the 

 older specimens the dorsal surfaces of the head become black, with 

 the brown areas reduced to fine pencilings. Antemiae black, except 

 a brown ring around apex of second segment. Eyes in mature males 

 blue in the upper half, shading into gray below. 



Prothorax ])ale brown in teneral specimens, with a transverse row 

 of four black spots. In older specimens the general color becomes 



