81 



3. LopJioderus f^eluiinanus, Walk. 



This species, already mentioned as occurring in corn, was likewise 

 bred from the strawberry this year, a leaf roller collected July 20 

 pupating on the 25tli, and emerging at a date unknown as the imago 

 of this species. 



4. SUPPLEMENTAEY NoTE ON THE StKAWBEKRY EoOT WoRMS. 



Order Coleoptera. Family Chrysomelid.e. 



In my report for last year appeared an elaborate article on these 

 insects, (pp. 150-177), containing an account of the curious correla- 

 tion of the life histories of the species included under this head, by 

 reason of which they attack their food plant successively, the three 

 species jointly occupying the ground as larvae throughout the year. 

 With a view to verifying this account, all opportunities have been 

 improved for further observation, and the data thus collected are 

 here given, together with additional economic notes. 



Paria aterrima, Oliv. 



[-'On the 9th May this species was seen near Normal in copula, on 

 raspberry leaves, upon which the beetles were feeding, during May 

 and the first part of June. 



In response to an urgent letter of inquiry from Mr. Wm. Jackson, 

 at Godfrey, respecting the complete destruction by insects of some 

 fields of strawberries in his neighborhood, I sent an assistant thither 

 .September 25, with directions to ascertain the cause' of the injury. 

 Three fields were visited at Upper Alton and Godfrey. In two of 

 them the greater part of the leaves had been riddled and killed, only 

 a few in the center of each stool remaining green. The third was so 

 far gone, from the same cause, that it had been recently plowed up 

 by its owner. 



Careful search of these fields revealed no in-sect capable of doing 

 this mischief except Paria aterrima, and this was so abundant as to 

 give good ground for the suspicion that it was the author of the 

 damage, — a suspicion fully confirmed by the fact that in the recently 

 plowed field, the young leaves occasionally put forth had been 

 freshly gnawed in the manner characteristic of the work of this 

 species. It is possible that the extensive damage to these plants 

 was largely due to the earlier work of the larvte in the roots. 



Scelodonta nehidosus, Lee. and Scelodonta piihesecns, Mels. 

 (Plate IX. Fig. 1-3.) 



The collections of this season and the results of breeding cage 

 experiments all serve to confirm our former account of the life his- 

 tory of S. nehidosus and yield the further interesting fact of the 

 occurrence, beside, of another very similar species, which feeds only 

 on the evening primrose (Oenothera), and whose life history is very 

 different from that of the first. 



The strawberry species was bred by us June 9 to 23, from larvse 

 collected in Southern Illinois from April 6 to 9. Two larvae obtained 

 April 7, seemingly only half grown, yielded small adults June 13. 

 —6 



