Psyche [February 



WESTERN LEPIDOPTERA IV. 



By Carl R. Coolidge. 

 Pasadena, Cal. 



Polites COras Cramer. Mr. F. Grinnell, Jr., has lately given 

 me several specimens of this species, better known as P. peckius 

 Kirby (peckiil), taken by Mr. C. W. Herr at Priest River, in 

 northwest Idaho. Coras is a common eastern species, but I 

 do not believe that it has hitherto been recorded from further 

 west than Kansas. 



Lycaena marina Reakirt. Egg, In shape round, abruptly 

 flattened both apically and basally; the micropylar area much 

 concave; a fine whitish lace work, with the meshes subrectan- 

 gular, and the angles somewhat elevated, covers the surface; 

 color when first laid a delicate light bluish green, soon changing 

 to a pure cream color; diameter about .02 inch. The duration 

 of this stage varies considerably, due to the prevailing weather 

 conditions. Some eggs hatched in slightly less than three days, 

 while others required as many as nine days. The larva accom- 

 plishes its emergence by eating away a considerable area about 

 the micropyle. The rest of the egg is left intact. Marina is one 

 of the commonest butterflies of the Far West, yet next to nothing 

 is known of its habits. In the Huachuca Mountains of southern 

 Arizona I found the larva feeding on five different food-plants, 

 and I do not doubt but that there were more in that one locality. 

 At present I can recognize specifically one of these, which is 

 Lathyrus larvatus. 



Atalepedes mesogramma Latreille. Dr. Dyar in his Review 

 of the Hesperiidae of the United States (Jour. New York Ent. 

 Soc, vol. 13, p. 127, 1905) includes this species in our fauna "on 

 the authority of Mabille, who credits the species to 'North 

 America'. This may refer to the West Indies or Mexico." 

 Mesogramma must, however, be stricken from our lists since it 

 appears to be confined strictly to Cuba and the Bahamas. 

 Scudder, in his Systematic Revision of some of the American 



