THE CANADIAN ENTOMOLOGIST. 187 



FURTHER NOTES ON THE RHOPALOCERA OF SANTA 

 CLARA COUNTY, CALIFORNIA. 



KARL R. COOLIDGE, MONTEREY, MONTEREY COUNTY, CALIF. 



The following additions and corrections are supplementary to my list 

 of the diurnal Lepidoptera of this county.* A few notes had been over- 

 looked, and the additions to the skippers have been made through the 

 naming of a small collection by Dr. Skinner. The hysterical state of 

 confusion in the Hesperidce makes it quite impossible for a western 

 collector to name his specimens correctly unless he has a large collection 



and library. 



Pieridse. 



Pontia occidentalism Reakirt. — Mr. A. F. Porter (Entom. News, Oct., 

 '08) records this species from Decorah, Iowa. I have gone over a number 

 of specimens from this locality, and I can hardly see why it should be 

 differentiated from protodice, Boisd., which also occurs here. I hope to 

 be able to breed protodice this coming season, and ascertain the relation- 

 ship between the two. The listing of Zerene eurydice, Boisd., from Iowa 

 by Mr. Porter is a lapsus calami. 



Euchloe sara, Boisd. — On page 425 I stated that it was quite 

 probable that sara had, besides Brassica, another food-plant on which 

 the larva feed in the higher hills, where mustard is not everywhere met 

 with. Late last June, while on a collecting trip in the Santa Cruz Moun- 

 tains, I found sara to be quite common, and after considerable searching 

 I discovered many eggs and young larva? on Sisymbrium officinale, the 

 common hedge mustard, on which I later observed a female ovipositing. 



Lycsenid*. 



Cyaniris ladon piasits, Boisd. — I find I overlooked the fact that Mr. 

 W. G. Wright, in the Can. Entom., Vol. XX, p. 97, 1888, briefly recorded 

 the life-history of piasus, the larva and pupa of which I recently described.! 

 Mr. Wright gives as the food-plant at San Bernardino the flower buds of 

 Adenostoma fasciculatum (Rosacece). Prof. Kellogg, illustrating the 

 chapter on " Colour Patterns and their Uses," in his American Insects, 

 gives three figures in colour of the larva of piasus on its foodq^lant, 

 sEsculus Californicus. The illustrations are given under the title of 

 " Latvce of Lycce.na sp.," but in the later edition I find this is changed to 

 " Larvce of Lycce.na ladon piasus, Boisd." The following is quoted from 

 the text : " An interesting example of colour harmony, which may be 



*Can. Ent., November, 1908, Vol. XL, p. 425. 

 ICan. Ent., October, 1908, Vol. XL, p. 347. 

 June, 1909 



