292 HYMENOPTERA. 



greenhouse at Urbana, May 23, 1910 ; one female at Cen- 

 tralia on a window, August 27, 1909, and one male and one 

 female at Butler, Illinois, in a dead artificial cedar forest 

 (sweeping weeds), July 14, 1911; also one male and five fe- 

 males taken in a greenhouse at Annapolis, Maryland, August 

 25, 1910 (A. A. Girault). Also I have observed females of 

 this species crawling over the panes of a window of a flour 

 mill at Bloomington, Illinois, October, 1909. 

 2. AuagTUS epos species nova. 



Normal position. 



Female. — Length, 0.35 mm. Very small for the genus, not easily 

 visible to the naked eye ; about the size of the larger females of Cainp- 

 toptera pulla Girault but less easily seen. 



Similar to the typical form of armatus Ashmead but slighter and 

 diflfering in the following structural details : The second and third 

 funicle joints of the antennae are shorter, the third is somewhat longer 

 than the second, as much longer as the second is longer than the third 

 in armatus — thus in this species the second funicle joint is only about 

 two and one-half times longer than wide ; whereas in armatus it is 

 about five or more times longer than wide ; furthermore, while with 

 this species the distal funicle joint is distinctly longer than the second 

 joint of the funicle, in armatus it is distinctly shorter ; it is broader in 

 both. The fore wings differ — in this species they have finer marginal 

 ciliation somewhat as in spiritus and the discal ciliation is somewhat 

 as in frequens Perkins, in that a more or less distinct naked area, ellip- 

 tical in shape, is left near the caudal wing margin just proximad of 

 the apex ; only three principal lines of the discal cilia are prominent, 

 the central or third one long, as long as in armatus; at the apex, a 

 part (several cilia) of a fourth line is present between the second and 

 third ; and a fifth near the caudal margin. 



General color gamboge, unmarked, sometimes the base of the abdo- 

 men dorsad at base dusky or the whole of the dorsum may be dusky 

 (rarer, the head, pronotum and whole abdomen dusky, the wings then 

 more pronouncedly fumated). Eyes dark red ; ocelli ruby red. Legs 

 and antennse concolorous, only the club of the latter dusky, usually. 

 Fore wings variable, distinctly fumated sometimes across the venation, 

 usually hyaline. Posterior wings without midlongitudinal discal cilia- 

 tion, as in armatus. Ovipositor exserted as in armatus. Parapsidal 

 furrows complete. 



Antennse 9-jointed ; first funicle joint minute, second about three 

 and one-half times longer, remaining joints lengthening and widening 

 distad. 



From 9 specimens, |-inch objective, 1-inch optic, Bausch 

 and Lomb. 



