202 THE CANADIAN ENTOMOLOGIST. 



June 8th. — Autumnalis still abundant, but some intermedia seen. 



June 12th. — Intermedia becoming common, and autumnalis scarce. 



June 26th. — Intermedia abundant, a single autumnalis, a £ ? taken, and 

 this is the last seen. 



C. eury theme var. intermedia is now (July 17 th) abundant, and C. 

 alexandra is flying very freely. It is a curious circumstance that the 

 so called " albino " females (var. pallida) do not appear to occur in 

 autumnalis, or if they do are very rare, while they are so frequent in 

 intermedia that I have sometimes fancied they even outnumbered the 

 typical females. In both forms, I think, the females outnumber the 

 males. 

 From the above facts, I think that it is hard to come to any other 



conclusion than that the orange and yellow forms alternate, and that this 



should be so, presents perhaps one of the most remarkable cases of 



seasonal dimorphism at present known. 



There is a very large Asiliid fly found here, which occasionally preys 

 upon C. eurytheme var. intermedia in the perfect state. 



DESCRIPTION OF A NEW SPECIES OF ORTHESIA FROM 



CALIFORNIA. 



BY WILLIAM H. ASHMEAD, JACKSONVILLE, FLA. 



In a collection of Hemiptera sent me some time since for identifica- 

 tion, were two male specimens of a coccid, and a single white waxy sac, 

 from which one had issued, attached to the upper surface of a small, oval 

 leaf, which at the time, from a superficial examination, I took to be a 

 mealy bug, Dactylopius longifilis Comstock ; but recently on a more 

 careful examination I find to be a species of that interesting genus 

 Orthesia Bosc. 



But a single species has been described in this genus in our fauna, i.e., 

 Orthesia Americana Walker. A good description of what is supposed to 

 be this species was given by Prof. Comstock in the U. S. Agricultural 

 Report, 1880, page 349. As the present species does not agree with that 

 description, it is apparently undescribed, and below I give a description 

 of it, naming it in honour of its discoverer, Mr. Hy. Edwards, who took it 

 at Grass Valley, Nepa County, California. 



