318 HYMENOPTERA. 



DIAGNOSTIC TABLE 



of the North American species of Polynema Haliday.— Females. 



A. First funicle joint of antenna normal, short, distinctly shorter than 

 the second (except bifasciatipenne) . 

 I. Fore wings narrow, their marginal cilia longer than their great- 

 est width, or as long, their discal cilia coarse. 



1. Discal cilia of fore wing usually long like fine hair, as long 



as the longest marginal cilia of the caudal wings. Fore 

 wings comparatively broad. 

 Marginal cilia long and fine, a fifth longer than the greatest 

 width of the fore wing. Black, legs pallid yellow ; second 

 funicle joint of antenna a third longer than the third joint ; 

 marginal cilia of cephalic margin of posterior wing longer 

 than usual caesariatipemie Girault. 



2. Discal cilia of fore wing coarse but not long and hair-like ; dis- 



tinctly not as long as the longest marginal cilia of the 

 caudal wings. 

 Marginal cilia of fore wing about equal to that wing's great- 

 est width ; about eleven lines of discal cilia. 



Black, legs yellow maculipes Ashmead. 



Marginal cilia of fore wing distinctly longer than that wing's 

 greatest width, the fore wings more slender. 

 Species black, the thorax and legs yellow ; wings broader, 

 their discal cilia coarser and longer ; second funicle joint 



barely longer than the pedicel zetes Girault 



Species black, the legs pale yellow; wings very narrow, 

 their discal cilia nearly normal; second funicle joint dis- 

 tinctly longer than the pedicel loilg'ipes Ashmead. 



II. Fore wings broader, their marginal cilia shorter than their great- 

 est width. 



1. Fore wings with dusky fasciae or spots. Species brown or 



black. 

 Species brown, the fore wings with three (two distinct) brown 

 bands ; proximal funicle joint long. 



bifasciatipenne Girault. 

 Species black, the fore wings with two dusky, rounded spots ; 

 proximal funicle joint short, hormal. 



biniaciilatipenne Girault. 



2. Fore wings hyaline, species black. 



a. Ovipositor exserted for two-thirds length of abdomen. 

 First three antennal joints, petiole and legs honey-yellow. 



needliami Ashmead. 



b. Ovipositor not or but slightly exserted ; if exserted not for 



more than a fourth the length of the body of the abdomen. 



