254 Journal New York Entomological Society. [Voi. xvih. 



antennse differ from those of the male of conotracheli in having more notice- 

 able pubescence, the hairs of the antennas being minute and inconspicuous in 

 that species, in having the antennal joints somewhat more slender, inter- 

 mediate in length between conotracheli and sordidada but more like the 

 former. The male of the last-named species has about the same amount of 

 pubescence on the antennae as has the male of pullicrura. 



Habitat. — United States — Centralia and Urbana, 111. 



Type. — Accession No. 41,686, Illinois State Laboratory of Natural 

 History, Urbana, 111., i J in xylol-balsam. 



Described from three female specimens mounted in balsam and 

 subsequently cleared in xylol and allowed to dry in order to obtain 

 correct description of the sculpture and other body characters and a 

 fourth specimen of the same sex stupefied with chloroform and 

 studied unmounted before its death. Three of these specimens were 

 captured on August 26 and 30, 1909, on the panes of a small window 

 and the fourth in the same place on September 5, 1909, at Centralia, 

 111. Subsequently, I have captured a single female at Urbana, Illinois, 

 June 9, 1910, in a greenhouse and two males in the same locality, 

 July I, 1910, sweeping and in a greenhouse. 



This species is about two-thirds the size of A. sordidata but re- 

 cently described from the same locality but at first glance or casually 

 very similar to it ; it is still more like conotracheli in antennal struc- 

 tures. However, the narrower wings, the much shorter row of 

 discal cilia of the posterior wings, the lesser number of longitudinal 

 rows of discal cilia in the fore wings, the short second, the longer 

 third funicle joints, the broadening of the antennal funicle distad of 

 the second joint, the darker first funicle joint and lighter more uni- 

 formly colored legs are characters which must be depended upon to 

 distinguish it from the type species and which are readily detected 

 upon close study. Its narrower fore wings separate it from 

 conotracheli. 



Tribe Mymarini. 

 Genus Polynema Haliday. 

 I. Polynema bifasciatipenne (Girault). 



"Polynema cecanthi Ashmead," Pierce, 1907, p. 361. 



Stichothrix bifasciatipennis Girault, 19086^ pp. 11 5-1 17. 



Since describing this species I have had access to all of the 

 Mymaridse in the collections of the United States National Museum 

 and find therein four tagmounted sets of it, a study of which con- 



