THE CANADIAN ENTOMOLOGIST, 23 



r 



volume we drew attention to the fact of the enormous abundance of the 

 larvae of C. sylvatica last year in many of the western portions of Ontario, 

 and to the further fact that we had found a large number of the larvae to 

 be infested by parasites, both Dipterous and Hymenopterous. Notwith- 

 standing this, large numbers matured and their egg clusters are numerously 

 distributed over almost every forest and fruit tree. We have no evidence 

 that birds devour many of them, hence we warmly welcome this new found 

 friend, who has doubtless been silently working in our interest for many 

 years past. In 1868 the larva of sylvatica was almost as abundant as it 

 was last summer, while in 1869 very few were to be found. By the light 

 of these observations it is easy to see that these destructive insects may 

 be decimated by one of two methods, or by both ; in the first place by 

 the enormous increase of these mite enemies, or by the occurrence of a 

 severe frost following a few warm days in spring, during which by the heat 

 of the sun the larvae have been incited to activity, and having left their 

 snug winter quarters, have, while in a feeble and comparatively unpro- 

 tected state, been destroyed by cold. 



NEW PYRALIDES. 

 IV. 



BY A. R. GROTE, A. M., 



Director of the Museum, Buffalo Society Natural Sciences. 



I am indebted to Mr. Jas. Behrens for some Californian Pyralides. 

 Among them is a specimen of Orobaena octonalis of Zeller, hitherto found 

 in Texas and Kansas. The specimen is labelled "San Diego, Aug., 

 1874." Two specimens of Eurycreon ctiortalis : "Soda Sp.," and two 

 of Botis unifascialis : " Sauzalito, May 27," are also present. 



In the present paper I continue my descriptions and corrections. 

 There are yet a large number of new species of Botis ; I regret that I 

 cannot identify many of Lederer's from his figures and descriptions. 



