14 HYMENOPTERA. 



pedicle, single ring-joint and funicle combined ; pedicel some- 

 what longer than the funicle, distinctly longer than either of 

 the funicle joints taken alone ; funicle joints subquadrate, 

 subequal, wider than long. Thorax shorter than abdomen, 

 the parapsidal furrows complete, the mesoscutum largest, its 

 caudal margin not straight, the cephalic margin of the scu- 

 tellum acute at the meson; abdomen cylindrical, about equal 

 to the head and thorax combined, as in Pentarthron Riley. 

 Ovipositor not exserted, the valves short, non-prominent, as 

 in Pentarth7'on. 



Fore wings moderately narrow, regularly rounded, the mar- 

 gins of the blade distad similar, the marginal fringes mod- 

 erately long, about from a fourth to a fifth of the greatest 

 wing width and at least twice longer than in Pentarthron, the 

 discal ciliation moderate, about from 10 to 14 longitudinal 

 lines, some of which are short ; venation forming a regular 

 bow as in Pentarthron, the submarginal vein very long, the 

 marginal shortest, stoutest, the stigmal vein distinctly longer 

 than the marginal and forming the longest arm of the bow, 

 its knob rounded and distinct, the uncus small. Postmar- 

 ginal vein absent. Posterior wings narrow, acute at the dis- 

 tal end of the marginal vein, bearing one principal longitu- 

 dinal line of discal cilia, the lines along the edges of the disk 

 absent ; the marginal ciliation normal. 



Tarsi 3-jointed, the joints moderate in length, simple ; 

 tibial spurs all single, all straight, moderate to small. Tarsi 

 without claws, apparently. Sculpture of the body not con- 

 spicuous. Pubescence of antennae as in Pentarthron, not 

 conspicuous as in the other sex. 



Male. — The same ; antennae (fig. 7) with conspicuous 

 single long setae, like pine leaves, on the funicle and club 

 joints, cylindrical, with eight distinct joints, the scape and 

 pedicel as in the female, the four funicle joints subquadrate 

 to rectangular and not unlike the club joint which, however, 

 is somewhat conical. The abdomen is somewhat shorter 

 and more rounded. The articulation between the club and 

 fourth funicle joint is less defined than that between the other 

 funicle joints, sometimes not seen without the aid of high 



