164 THOMAS SAY FOUNDATION 



behind they are broad and flat and bluntly rounded 

 at the tip; penis brown, basal segment rather short 

 and wide; the distal segment very complicated; from 

 its base it widens rapidly in profile and the back part 

 is jointed at the middle, the second part widening 

 into a transverse plate which is as long as the rest of 

 the organ. From the middle of the segment there are 

 several rather straight processes standing up in front 

 of this plate. On the front side there is a very com- 

 plex structure standing out near the base and bend- 

 ing forward, which contains two or three pairs of pro- 

 cesses parallel to those previously mentioned. Fifth 

 sternite brownish yellow, broadly visible, keeled at 

 base; at the point of separation of the two arms there 

 is a ridge on each side which at its base bears a tuft 

 of short, stiff black spines. 



Legs black; middle femur without comb; middle 

 and hind tibia densely villous, the former having the 

 villosity mostly on the apical half and bearing two 

 bristles on the outer front side. All the femora are 

 stout and ha^ e long hair on the under side ; claws and 

 pulvilli long, the latter brownish. 



Wings slightly brownish, without costal spines; 

 third segment of costa much longer than the fifth; 

 third vein hairy about halfway to crossvein. 



Female. Front .403 of head (average of four, 

 — .389, .392, .414, .41,5), with the usual two orbital 

 bristles present but smallish; parafrontals and para- 

 facials inclining to silvery in color, bearing rather 

 numerous hairs, especially above. Frontal bristles 

 small; bucca three-fourths the eyeheight; subapical 

 bristles of the scutellum very nearly in line with the 

 marginals; genital segment black, strongly chitinized 

 and hairy, the orifice wide, heavily fringed with bris- 

 tles above. Tibia destitute of villositv; middle tiba 

 with three bristles on the outer front side. 



Length 10-14 mm. 



Fifteen males and four females. Five males and 

 one female are from Anglesea, N. J.; one male and 

 one female on the same pin are from Cape INIay, N. 



