66 PROCEEDINGS ENTOMOLOGICAL SOCIETY 



The larva spins a silken cocoon, attaching it to inside wall of 

 the aphid, leaving it entire ; it does not make any opening in 

 the cocoon nor cnt away any of the aphid wall. When the insect 

 becomes fully developed it kicks and pushes about until it 

 frees itself from the pupal envelope and then begins to use its 

 mandibles freely upon the silk of the cocoon; in three to five 

 hours it cuts out a disc of the aphid skin and crawls out ready 

 to fly away. 



The adult is not only ready to fly away, but is also ready to 

 begin reproducing its kind. Virgin females began ovipositing 

 within four minutes after escaping from the cocoon ; another 

 mated to a male within less than one minute; this latter ovi- 

 posited in To.voptera graminum within five minutes, from 

 which adult Lysiphlebus were afterwards reared. 



Mr. Gahan gave some remarks on the rearing of parasites 

 from the nests of Thyridopteryx ephctneraeformis and men- 

 tioned finding Dicymolomia julianalis feeding on the eggs. 

 The previous records found by Mr. Gahan were from cat-tail 

 heads. One of the parasites, Leucodesmia typica How., was 

 reared for the first time since the original material on which 

 the species was based. 



Mr. Quaintance said that about a year ago he and Mr. Jones 

 had reared D. julianalis from the same source and on looking 

 up the literature found it recorded years ago by Professor 

 Riley. 



Dr. Dyar was of the opinion that this species was a scaven- 

 ger looking for insect remains and that their eating of the eggs 

 was accidental. Specimens in the National Museum have been 

 bred from the heads of Typlia and from cotton bolls, where 

 they were probably scavengers. 



Mr. Banks recorded the finding of several specimens of the 

 southern house spider (Thalamia parictalis Htz.) at Washing- 

 ton. 



Mr. Banks noted the occurrence of the young of the chicken 

 tick (Arc/as uiiniata} on diseased quail sent in from California 

 by Professor Grinnell. From this he was inclined to think 

 that this species is a native of this country and not introduced. 



