No. 22.] HYMENOPTERA OF CONNECTICUT. I33 



40. Stigma rather elongate and acuminate; extreme tips of hind 



tibiae brown 41 



Stigma short and robust; apical half of hind tibiae infuscated; 

 clypeus shallowly but distinctly emarginate; ridges around 

 ocellar basin rounded but distinct; procidentia narrow, 

 short, and blunt; body black, with clypeus, labruni, palpi, 

 tegulse, and legs except coxae and posteric5r tibiae and tarsi, 

 yellowish ferruginous. Length 5.5 mm lombardae 



41. Abdomen with venter black; hind wings with free part of R4 



and transverse part of M2 interstitial ; procidentia short, 

 narrow, slightly constricted basally, truncate at apex; other 



characters as in female. Length 6 mm harringtoni 



Abdomen with venter pale; hind wings with free part of 

 R4 and the transverse part of M2 not interstitial; procidentia 

 short, narrow, truncate at apex; other characters as in 

 female except that dorsum of abdomen is entirely black 

 and venter infuscated. Length 6 mm fylesi 



42. Abdomen entirely black on dorsum ; upper half of pleurae pale ; 



procidentia apparently nearly wanting; other characters as 



in female. Length 4.5 mm thoracica 



Abdomen with a transverse reddish band on segments two 

 and three of dorsum and venter ; procidentia as long as 

 broad, narrow, tapering, squarely truncate, or slightly 

 emarginate at apex, constricted at base; other characters 

 as in female, except that inner orbits are black, legs dark 

 reddish yellow, bases of all dorsal abdominal segments 

 dark, especially the terminal ones, and hind tibiae slightly 

 infuscated. Length 7 mm ventralis 



43. Stigma and costa brown 44 



Stigma and costa yellowish hyaline 45 



44. Head nearly spherical in outline when viewed laterally; clyp- 



eus narrowly and deeply excavated; procidentia short, nar- 

 row, rounded at apex. Length 5 mm odorata 



Head triangular in outline when viewed laterally; clypeus 

 rather broadly excavated; procidentia short, narrow, pro- 

 jecting about its own width. Length 5 mm cornelli 



45. Procidentia narrow, nearly twice as long as wide, slightly 



notched at tip; other structural characters as in female. 



Length 4 mm vertebrata 



Procidentia narrow, projecting, squarely truncate at apex, 

 about as wide as long; other structural characters as in 

 female. Length 4.5-5 mm mendica 



o 



P. lata (Marlatt). Pteronus latus MsLvlztt. 



P. limbata (Cresson). Nematus limbatus Cresson. 



