46 THE CANADIAN ENTOMOLOGIST. 



is a pale yellow line ; on each side of each segment are about six deep 

 yellow warts, from each of which proceeds a thin spreading cluster of 

 blackish hairs ; venter dark colored ; head black, dotted with white, with 

 two white streaks on top, and a yellow v-shaped mark on the face ; length 

 i^ inches. Feeds on Smartweed (Polygonum). June i to July 10, and 

 August 20 to October 1. Spins a cocoon. 



I should like to request those persons who intend to publish descrip- 

 tions of larvse to always give the number of legs with which the larva is 

 provided ; and also to give the location of the lines or spots with which 

 the larva is marked — that is, to state whether they are dorsal, subdorsal or 

 stigmatal, or whether they are on the subdorsal or stigmatal space. 



A LIST OF DIURNAL LEPIDOPTERA INHABITING THE 



STATE OF ILLINOIS. 



BY C. E. WORTHINGTON, CHICAGO, ILL. 



The following list is furnished in compliance with the request of the 

 Editor of the Canadian Entomologist, published some time ago, some 

 unsettled questions regarding species and distribution having delayed its 

 preparation from time to time. 



The list is intended to be as complete as possible, and to include all 

 described species known to have been taken within the State limits, or so 

 nearly adjacent thereto as to certainly belong to the Illinois Fauna. 



In order to roughly designate the distribution within the State I have 

 attached an * to all species from the northern portion, of whose capture I 

 have personal knowledge, and have further affixed a + to such species as 

 are not known to occur in the southern portion of the State. 



Several species of Pamphila, viz., Pamphila pontine, dion, hianna, 

 bimacula, pottawattomie and ursa, appear to be limited to the north-east 

 corner of the State, Chrysophanus dione and several northern forms to the 

 north-west portion, and presumably Agraulis vani/ice and other southern 

 forms are merely occasional visitors to the extreme southern end. 



I have refrained from including Pamphila uncos, Amblyscirtes vialis and 

 Pyrgus centaurece, which doubtless belong to our Fauna, and are likely to 

 be taken when the proper localities are fully explored. 



