ART. 15«. REVISION OF SUBFAMILY PLATYGASTERINAE FOUTS. 43 



Redescribed from the type specimen in the United States National 

 Museum. The original type series consisted of three female speci- 

 mens. These represent two species. Some time after describing 

 picipes, Ashmead saw that two species were represented in his type 

 series and selected one specimen as the type, giving it the type num- 

 ber listed above. I consider this specimen the type and my descrip- 

 tion is based upon it. The other two specimens remain undescribed. 



13. PLATYGASTER VANCOUVERENSIS (Ashmead). 



Polymecus vancouverensis Ashmead, Bull. 45, U. S. Nat. Mus., 1893, p. 281. 



Female. — Length 3 mm. Head slightly less than twice as wide 

 as long seen from above, very full behind the eyes, the cheeks wider 

 than the eyes: occiput and vertex uniformly moderately shagreened; 

 cheeks and spot in center of vertex more finely shagreened; ocellar 

 triangle and area around ocelli shagreened as strongly as the occiput 

 and vertex on the sides; frons subopaque, very finely uniformly 

 shagreened, just above the antennal projection with a few small 

 transversely directed carinae; antennal projection truncate distally, 

 excavated with the edges raised; antennae moderately stout; scape 

 slightly curved, a trifle shorter than the six following joints united; 

 pedicel twice as long as wide at apex, as long as the two following 

 joints united and about as thick as the fourth at apex; third joint 

 half as long as the fourth, as long as wide and a little narrower than 

 the fourth; joints four and five subequal in length and width, a little 

 longer than wide; six as wide as long, the sides oblique; seven as 

 wide as long and considerably thicker than the sixth, wider apically 

 than basally; eighth and ninth joints subequal in length and width 

 to the seventh, their outer angles slightly produced; tenth joint as 

 long as the pedicel and a little wider than that joint, ovalo-conical, 

 not acutely pointed, the sides on basal half parallel; thorax about 

 twice as long as wide, shining, a little narrower across the tegulae 

 than the head; pronotum rather strongly shagreened except below 

 and behind on the sides, with a few faint striae below, the two longi- 

 tudinal ridges neither high nor sharp; mesonotum somewhat flat- 

 tened; notauli complete; median lobe entirely shagreened, projecting 

 upon the scutellum in a sharp point; scutellum slightly transverse 

 seen from above, shagreened, margined laterally, with a few short 

 scattered hairs on the sides; abdomen about twice as long as the 

 head and thorax united, polished, at the apex of the second segment 

 a little wider than the head, from the second segment narrowing 

 gradually to the apex; first tergite laterally, and second tergite at 

 the bases of the foveae, covered rather densely with white pubesenoe; 

 first tergite twice as wide as long, the median area a little longer 

 than wide, with a few longitudinal carinae; second tergite one and 



