Pomona College Journal of Entomology 563 



t. p. line opposite tlie cell .-iiul anal angle. The orbicular is elongate, pointed, 

 slightly defined; the reniforni is a dusky, lunate spot. 



The type locality is Sierra Nevada, California, and tlie s|)ecies is rare; most 

 of those standing under that name in collections being erroneously determined. 

 There are none in my collection. 



The larvae is said to feed on poplar. 



Acronycta frigida Sm. 



Similar to felina in general type of maculation, but decidedly blue gray in 

 ground, with all the maeulation rejiresented more clearly and cleanly marked. 

 The t. a. line is at least indicated and the t. p. line is obvious throughout. The 

 basal black streak is obvious and there is a line of black scales in continuance, 

 joining it to the black streak crossing the t. p. line, which latter streak continues 

 across the terminal space to margin above anal angle. The black dash crossing 

 the t. p. line opposite the cell is equally distinct, and both orbicular and reniform 

 are well marked. 



The type localities are Truckee and Sierra Nevada, California, and the 

 species seems to be rare. The larvae is said to feed on willow. 



Acronycta cyanescens Hamps. 



Resembles frigida so closely that I had considered it identical. It is, how- 

 ever, much more powdery and obscure, the markings diffuse and ill-defined, the 

 daggers crossing the t. p. line less obvious, the orbicular wanting. I am inclined 

 to consider the latter character variable, and quite expect that well marked 

 examples will have this mark at least traceable. 



The type locality is Vancouver, and my own single example is from Victoria, 

 British Columbia ; but I have little doubt that the species will be found to extend 

 down the coast, and into California along the mountain ranges. 



Acronycta pacifica Sm. 



Rather a smaller and more fully marked species than the three just preceding. 

 The ground color is pale, but the surface is densely black powdered and the veins 

 are black marked, so that the insect has a strigate appearance, which is especially 

 marked beyond the t. p. line. The basal streak terminates at the t. a. line and has 

 an obvious tendency to fork, as in the more eastern Cinderella. Both dagger marks 

 crossing the t. p. line are obvious but no conspicuous, and both orbicular and 

 reniform are present. 



The type locality is Sierra Nevada, California, and besides the types I know 

 of no other examples at present. 



Acronycta mansueta Sm. 

 This is a smaller, broader-winged species than any of the preceding, the 

 ground color of a smooth, even, pale blue gray. All the ordinary lines and marks 

 are obvious, but not contrasting, the distinctive feature being the broad, blackish 

 shading along the inner margin. This extends from base to outer margin, but is 

 broken before the t. p. line. It is quite similar to falcula in general type of 



