18 PLATYPT1LUS. 



apical margin are white, their bases only being 

 of the same colour as the wings. There is no 

 indication of a spot near the fissure. 



The hind wings are brown, with the cilia slightly 

 paler along their base. 



Abdomen brown ; the third pair of legs brownish 

 cinereous ; the feet and spurs scarcely paler. 



Expanse 24 millims. 



The white apical half of the cilia is easily abraded, 

 and is not distinguishable in worn specimens ; but 

 the shorter frontal tuft at once distinguishes it from 

 P. adustus. 



It approaches more nearly the genus Mimeseoptilus 

 in general appearance ; but the anal angle is more 

 strongly defined, and, indeed, it decidedly possesses 

 the generic characters of the genus to which I have 

 here referred it. 



Six specimens, d and $ , were taken (May 30th, 

 1871) on the coast near Mendocino, California. 



Platyptilus modestus, sp. nov. 



(PLATE I. FIG. 1.4.) 



Capite, palpis, antennis (dilute punctatis) et alls an- 

 ticis cinereis, costa ante fissuram fusco adum- 

 brata, triangulo costali vix indicate, puncto ante 

 apicem fssura? fusco ; ciliis intra fssuram et in 



