312 HYMENOPTERA. 



length of the first. Strigils present. Valves of ovipositor exserted 

 but not very much, only for about a fourth of the length of the ab- 

 domen. 



Antennae normal; scape broad, somewhat longer than the pedicel 

 and first funicle joint united ; pedicel subequal in length to the proxi- 

 mal funicle joint which is slender but somewhat less than a half of the 

 length of the long second joint ; the latter longer than the scape and 

 about a fourth longer than the third funicle joint which is long, two- 

 thirds longer than the proximal and fourth funicle joints taken sepa- 

 rately ; joint 4 wider ; joint 5 slightly wider and longer than 4 ; the 

 sixth or distal funicle joint still somewhat longer and wider, distinctly 

 shorter than funicle joint 3, cylindrical-ovate. Club long-ovate, nor- 

 mal. Scape without peculiar sculpture ; pubescence not conspicuous. 



From a single specimen, |-inch objective, 1-inch optic, 

 Bausch and Lomb. 



3/a/e.— Length, 1.43 mm. The same, but the legs and abdominal 

 petiole are dusky, the scape and pedicel pallid yellowish, the knees, 

 trochanters and proximal three tarsal joints pallid yellowish. 



The joints of the flagellum are very long and longitudinally striate, 

 the distal or club joint about a third shorter, the proximal funicle joint 

 slightly shorter than the next joint, the latter and those remaining 

 subequal in length, about four times the length of the pedicel. 



From 2 specimens, f-inch objective, 1-inch optic, Bausch 

 and Lomb. 



Described from the following specimens, mounted in xylol- 

 balsam : A male specimen mounted on a tag in the U. S. 

 National Museum collections labelled in Ashmead's hand 

 " Cosmocoma flavipetiolata Ashm. Type. Arlington, Va. " ; 

 another male in the same collection but without labels ; and 

 a tag-mounted female specimen in the collection of the Mil- 

 waukee Public Museum, Milwaukee, Wisconsin, labelled 

 " Polynema needhami Ashmead. 9. Milw. Co., Wis. VI, 

 1, 1906. 37,017 ". 



While this species so closely resembles needhami, as known 

 through the latter's general description, yet it can not be rec- 

 onciled with the description of that species on account of the 

 statement therein that the ovipositor is exserted for two- 

 thirds the length of the abdomen ; in this genus, the fact 

 that it resembles needhami in color is nearly meaningless, 

 for other distinct species so resemble each other. The ovi- 

 positor in Sibylla is not exserted for any length. 



