OF WASHINGTON. 



They had been kept in a glass jar without earth since November 

 30. One elongate gall contained two small living larvas and one 

 dead one. The two living larvae and a larger one taken from 

 another elongate gall, were put on earth, in which all three soon 

 buried themselves. In one small round terminal gall there was 

 found a large motionless orange maggot, which was apparently 

 in the pupa state. Another was found in a second small gall. 

 These, when put on earth, remained motionless and made no 

 attempt to bury themselves. 



A second specimen of the white hymenopterous, parasitic larva 

 was found in another small gall. It was active, but would not 

 bury itself when placed on earth. About 100 galls in all were 

 opened on this date, but very few of them were found to contain 

 cecidomyiid larvae. 



If there are two species among these galls, the short, bud galls 

 evidently yield the larger species ; while the elongate, stem galls 

 probably yield a smaller species, but more larvae live in the same 

 gall. Both specimens of the hymenopterous parasite were found 

 in the short, bud galls. 



Later, about January or February, a hymenopterous parasite, 

 a species of the genus Torymus, as determined by Mr. Howard, 

 was bred from these galls. This is undoubtedly the adult of 

 the parasitic larva above mentioned. 



This cecidomyiid, if it be only one species which produces 

 these two forms of galls, does not seem to be described. It is 

 certainly injurious enough to the dogwood in the vicinity of 

 Washington to attract some attention and study.* 



Mr. Chittenden presented for publication a paper entitled 



BIOLOGIC NOTES ON SOME SPECIES OF SCOLYTIDjE. 

 By F. H. CHITTENDEN. 



Monarthrum fasciatum Say. Numbers of this species 

 were observed at Ithaca, N. Y., during the first week of June 

 boring into the trunk of a living and, to all appearances, healthy 

 shag-bark hickory, Hicoria ovata (Carya alba}. They were 

 working through the bark straight toward the heart of the tree, 

 with the caudal extremities of many projecting from their burrows. 

 Accompanying them, crawling about on the trunk in nearly equal 

 numbers, was a small Colydiid, Synchita parvula. 



At Port Richmond, Staten Island, this species was again found 

 in the first week of June as before, but this time attacking a 



* Subsequent to the reading of this paper this cecidomyiid has been 

 described by Mr. Beutenmuller as C. flavula (Bull. Am. Mus. Nat. Hist., 

 iv, p. 269). 



