4 HYMENOPTERA. 



just following the fumated area distad. The posterior wings 

 are similarly ciliated, but the rows of cilia not extending 

 half-way to the base of the wing blades as in the male fore 

 wing and the proximal fumation extending only to the end of 

 the venation. Tibial spurs single. 



Type. — Aphelinoidea semifuscipennis species nova, described 

 beyond. 



A genus at once recognized by means of the 5-jointed an- 

 tennae and further characterized by the straight venation, 

 the shortness of the stigmal vein, the normal shape and pubes- 

 cence of the fore wing and the latter's striking fuscation. It 

 may be distinguished from its nearest known ally, Tumidiclava 

 Girault, by means of its slenderer 2-jointed cylindrical an- 

 tennal club, the shape of the stigmal vein and the relatively 

 more dense discal ciliation of the fore wing. 



1. Aphelinoidea seniifuscipeimis species nova. 



Normal position. 



Female. Length, 0.65 mm. Moderate in size for thesubfamily. Dark, 

 base of the wings conspicuously clouded. General color piceous, dusky 

 black, shining, with a purplish sheen ; face dorsad, antennae, meta- 

 notum and base of the abdomen, apex of the abdomen, distal ends of 

 the tibiae, proximal two tarsal joints, leg articulations and the parap- 

 sides of the thorax yellow with some duskiness, the apical tarsal joints 

 dusky ; all of the lower (ventral) aspect of face ventrad of the eyes and 

 the antennal bulbs, cephalic aspect, piceous ; caudal aspect of the head 

 or the occipital region and portions of the vertex, dorsal aspect near the 

 occipital margin, yellowish, the vertex with some yellowish ; mandi- 

 bles fuscous ; eyes bright red, the ocelli darker, inconspicuous ; por- 

 tions of the scape and pedicel dusky, the base of the scape black. 

 Fore wings conspicuously fumated proximad, the clouded area some- 

 what more pronounced or darker just caudo-distad of the apex of 

 the marginal vein and its distal margin irregular, extending slightly 

 into the discal ciliation, usually its center farthest advanced but some- 

 times its caudal third ; of the blade of the wing, this clouded area 

 forms somewhat less than a third in length and of the whole wing 

 somewhat less than a half in length ; it is broken by a narrow clear 

 oblique streak running caudo-proximad from the end of the marginal 

 vein and apparently cutting it off from the short stigmal vein. Vena- 

 tion dusky. Venter concolorous, the tip of the abdomen, however, 

 with some yellowish. 



Stigmal vein formed at first of a nipple-like prolongation of the 

 center of the apex of the marginal vein, the caudal margin of this 



