8 INSECUTOR INSCITI^ MENSTRUUS 



This species was found breeding abundantly in small grassy 

 pools in narrow meadows along the Little Truckee River, Cali- 

 fornia. Also in a large pool of snow-water near Tahoe Tavern 

 on Lake Tahoe, California. The species favors open forest, 

 and occurs from the Rocky Mountains westward to Yukon 

 Territory, and in the high Sierras of California. It has not 

 been found in the Cascades. It is also recorded as occurring in 

 Scandinavia and other parts of northern Europe, but I have 

 not compared specimens. The larva is of the lasarensis type, 

 but has two or more detached teeth on the air-tube between the 

 hair-tuft and the apex, which is a unique character. The 

 species often occurs in large numbers, when present at all. 



Species 6 



Aedes (Ochlerotatus) niphadopsis Dyar & Knab. 



Acdes niphadopsis Dyar & Knab, Ins. Ins. Mens., v, 166, 1913. 

 Acdes niphadopsis Dyar, Ins. Ins. Mens., viii, 138, 1920. 

 Aedes (HeteronycJia) niphadopsis Dyar, Ins. Ins. Mens., viii, 

 105, 1920. 



This species is known only from the eastern shore of Great 

 Salt Lake, Utah. The larva resembles that of impiger rather 

 than cataphylla, though clearly distinct. The adult has the 

 white-marked and barred vestiture of other species inhabiting 

 open desert regions. 



NEW AMERICAN MOTHS AND NOTES 



(Lcpidoptcra) 

 By HARRISON G. DYAR 

 Family LITHOSIID^ 



Afrida exegens, new species. 



Fore wing gray ; a broad white band beyond base, the edges 

 irregular; an outer band, consisting of a long costal patch 

 joined to a rounded spot, reduced to a thread, which joins a 

 tornal spot; some black marking at base of costa and in cell, 

 bordering the white basally and distally. Hind wing white, 



