298 HYMENOPTERA. 



Fore wings usually without a naked area in the blade distad 

 near caudal margin ; marginal cilia moderately coarse ; 

 bright yellow, varying so that the head, prothorax and 



abdomen may be black ariuatlis Ashmead. 



Fore wings with a naked area in the blade distad near the 

 caudal margin ; marginal cilia very fine ; luteous. 



spiritus Girault. 



b. Second funicle joint of antenna subequal to or shorter than 



the third, distinctly shorter than the sixth. 



Fore wings with a naked area in the blade distad near the 



caudal margin ; marginal cilia moderately coarse ; lemon 



yellow epos Girault. 



2. Fore wings broader, with about from 9 to 11 longitudinal lines 

 of discal cilia across the broadest blade portion, 

 a. Fore wings without a naked area in the blade distad near 

 caudal margin ; funicle joints very gradually shortening 



distad l>iiella Girault. 



II. Species black, marked with yellow at base of the abdomen or on 

 thorax ; at least some of the funicle joints longer than the 

 pedicel. 



1. Fore wings narrow, the discal ciliation normal ; thorax yellow ; 



a variant of armaius ... .armiitiiii nig'i'iveiitris Girault. 



2. Fore wings broad, the discal ciliation disappearing after the 



distal half of the wing ; base of the abdomen yellow. 



io Girault. 



III. Species entirely dusky black ; funicle joints of antennae all shorter 



and much smaller than the pedicel. 



Fore wings moderately broad, with about 12 longitudinal lines of 



uniform discal cilia across their widest blade portion, their 



caudal margins about straight. 



a. Scape and pedicel subequal ; trochanters, proximal tarsal 



joints and tips of the tibiae pallid saga Girault. 



Genus STETHYNIUM Enock. 

 1. Stetliyiiiuni faunuiu species nova. 



Normal position. 



Female. — Length, 0.55 mm. Moderately small for the genus. Dis- 

 tinguished from all of the preceding species of Anaphes and Anagrus 

 by the broad fore wings with normal, rather dense discal ciliation, the 

 dilated marginal vein and the peculiar antennal structure, the club 

 3-jointed. 



This genus was just recently described from England (Enock, 1909, 

 pp. 452-453, pi. XII, figs. 1-5), and it is gratifying therefore to find it 

 represented within our fauna. This North American species is gam- 

 boge in color, suffused with dusky and it resembles closely the type of 

 the genus, excepting that the fore wings are less rounded at apex the 



