DIURNAL LEPIDOPTERA. 21 



specimens on the hills in Berkshire county, Massachusetts, 

 which, from the railroad cars, appeared to be this species. 



No. 10. — Xanthidia Lisa. — I have taken a few specimens 

 at Rockport, but it is among the most rare species. 



No. 11. — X. NiciPPi. — This species occasionally is found in 

 the valley of the Mahoning river, and is abundant at Colum- 

 bus and Dayton, but I have never observed it in the vicinity 

 of Cleveland. Both the larvae and perfect insects usually 

 resort to the clover fields. 



No. 12. — Colias Philodice. — The common small yellow 

 butterfly is familiar to every one. It collects in large num- 

 bers about muddy and moist places. It is probable that 

 more than one species is embraced under this name. 



No. 13. — C. C(ESN0NiA. — At Dayton, Xenia and Columbus 

 this species is very numerous, yet I have never found it 

 near Cleveland. On the west side of Lake Michigan it is 

 abundant in a latitude north of ours. 



No. 14. — Callydrias Eubule. — This large and neily pure 

 yellow colored butterfly never reaches the northern extrem- 

 ity of Ohio, but is found at Dayton and Columbus occa- 

 sionally, and at Cincinnati in great numbers. It is said to 

 appear there only in the fore part of the summer. Its 

 history is unknown to me. 



No. 15. — Argynnis Idalia. — This showy species I have 

 found abundant in Connecticut and Wisconsin, while in 

 Northern Ohio I have never met with it, but have obtained 

 a few specimens from Dayton. Why it should exist both 

 east and west of us, and not in this locality, is an inter- 

 esting fact, explainable only upon the supposition that our 

 vicinity does not furnish suitable food for its larva. Of 

 what that consists, I have not been able to ascertain. 

 Drury, Boisduval and Le Conte have figured and described 

 this butterfly, but neither have furnished any light upon 

 this point. 



