Vol. XXvii] ENTOMOLOGICAL NEWS. 69 



the resting place. They are not easily disturbed and not at 

 all by any kind of sound. Only when corning in direct con- 

 tact with foreign material are they on the alert at once. When 

 so disturbed they sometimes alight on the ground, keeping 

 themselves perfectly motionless. 



C. titania is confined to a single species of tree, C. crus-galli, 

 on which it deposits its eggs, feeds and rests. This tree grows 

 in clusters in rich soil along the margins of swamps or near 

 streams, which clusters are widely scattered, often having 

 great distances between them. It is this which prevents, to 

 some extent, the migration of C. titania from one cluster of 

 C. crus-galli to another. Also it explains Mr. Dodge's and 

 Prof. Rowley's futile search for the species in the type local- 

 ity between 1900 and 1915 inclusive. Mr. Dodge had, un- 

 doubtedly, exterminated it in the cluster of C. crus-galli where 

 he first found it. 



Two New Mymaridae from the Eastern United 



States (Hym.) 

 By A. A. GIRAULT, Washington, D. C. 



The following species are the first of the genus Ooctoinis 

 Haliday to be described from North America. 



1. Ooctonus americanus new species. 



Female. Length, 1.15 mm. Black, the wings hyaline, venation dusky, 

 the abdominal petiole and legs reddish brown, but the femora and 

 tibiae suffused slightly with dusky. Incisions of abdominal segments 

 white. 



Fore-wings with line discal ciliation as in rolynciim striuticornc, the 

 marginal cilia short, not more than a seventh of the greatest wing 

 width, distinctly shorter than the caudal marginal cilia of the caudal 

 wing, the latter with six lines of discal cilia. Fore-wing with about 22 

 lines of discal cilia where broadest. 



Distal tarsal joint black, the proximal joint of the tarsi of moderate 

 length only. 



Flagellum slender ; funicle i suhequal to 2, longest, a little longer 

 than the usual pedicel, the latter pale at tip ; funicle i about thrice long- 

 er than wide ; funicle 3 somewhat shorter than 2, 4 considerably shorter 

 than 3; 5 and 6 subequal, shortest, not quite two-thirds longer than 



