OF WASHINGTON. 131 



terminal joints of tarsi fuscous, while the hind tibiae toward base behind 

 has a slight brownish blotch or spot; abdomen conic-ovate, pointed at 

 tip, a little longer than the head and thorax united; wings hyaline, the 

 venation pale brown ; otherwise the characters are typical of the genus. 



J\ Length 1.2 mm. Agrees with the 9' except the funicle is 4- 

 jointed, the abdomen being oblong-oval, cylindric, not longer than the 

 head and thorax united. 



Hab. Champaign, 111. 



Types in Illinois State Laboratory of Natural History. 



Described from i cP and i 9 specimen bred September 6 and 

 21, 1894, by W. G. Johnson, from Habrobracon (Sracon) 

 gelechice Ashm. and the primary parasite of Canarsia ham- 

 mondi. 



In discussing this paper, Mr. Johnson spoke of the great injury 

 which Canarsia hammondi had done to young apple trees in 

 McLain county, Illinois. In one season damage to the amount 

 of $1,500,000 had been done. One block of trees containing 

 125,000 had been completely destroyed. He found, among 

 other interesting facts, that this insect pupates in the ground and 

 not in the leaves, so that Riley's recommendation to burn the 

 leaves as a remedy is ineffective. In the course of his investiga 

 tions, he reared 13 species of parasites, all but one of which were 

 hymenopterous. Of the 12 Hymenoptera, 10 were primary para 

 sites. He gave some rearing notes concerning these 10 species 

 and showed that Habrobracon gelechice was the most important, 

 and constituted in number of specimens four-fifths of all which 

 were reared. The habits of this species were given in full, show 

 ing that only 12 days elapsed in the development of the insect from 

 the egg to the adult. Among other species, he mentioned a 

 Perilampus as a primary parasite, and this record was at once 

 questioned by Mr. Howard, who suggested that the insect was 

 more likely to have been a parasite of the Chrysopa which had 

 crawled into the Canarsia cocoon to spin its own cocoon. 



Mr. Johnson stated that he had not examined the Canarsia 

 cocoon from which this insect emerged. Mr. Ashmead consid 

 ered it more likely that the Perilampus had been a parasite upon 

 the dipterous parasite reared by Mr. Johnson. 



The following paper was read : 



