72 



young ash trees, to which they had done a great deal of injury. 

 Of these nearly fifty per cent produced specimens of this 

 same parasite, and an account of its work and appearance 

 was published in a paper in the Trans. Iowa Hort. Soc. 

 for 1880. The parasite appears somewhat later than the 

 adult moth, and chrysalids containing parasites can readily be 

 distinguished several days before their emergence. About the 

 time when the adult moth might be expected an examination of 

 the pupa case will show through its transparent walls another 

 pupa, somewhat smaller, within it, the substance of the host being 

 entirely devoured. The adult is black throughout, except joints, 

 II-16 of the antennae, a frontal border, dot in front of tegulae and 

 base of anterior tibiae, which are yellowish white ; wings fuligin- 

 ous. Length 60-70 in. It seems to me to correspond most 

 closely to Iclinewnon malacus, Say, and to the variety once de- 

 scribed as afer by Cresson, but differs in having the front bor- 

 dered with white and the anterior tibiae white at base. 



This, with the PhcBogenes atcr mentioned by Mr. French, 

 makes two species (one of which, at least, is rather common,) which 

 are now known to be parasites upon this Algerian. 



Mr. French is surely right in saying that the eggs are not 

 laid after pupation of the host. Although I have not been able 

 to ascertain positively, I incline to think the eggs are deposited 

 in the larva in its early stages, otherwise the parasite must pass 

 a large portion of its life, and hibernate, as adult, and then find 

 its prey quite well protected. 



In my notes upon this ALgerian I erroneously called it denu- 

 datuni, being misled by Harris's account of that species. 



I have also found a species of Crabronidce in the burrows 

 made by the larvae, but suppose it simply occupies it after the 

 A.g£rian has vacated it. 



ON CERTAIN PYRALID^. 



By a. R. Grote. 



My kind friend, Mr. Goodell, has sent me a box of Massachu- 

 setts moths, among which are a few PyralidcB of interest.* 



ASOPIA COSTALIS. Fabr. 



The specimen is the smallest I have seen, about half as large 

 as is usual. 



Arta Statalis. Gr. 



This species seems to be common in Massachusetts. I have 

 seen it in several collections. 



BOTIS Plectilis. G. & R. 



Common also in New York collections. 



* A severe illness has prevented mv examining my correspondence since my return from 

 Europe undl now.— A. R. G., May, 1882. 



