264 THOMxVS SAY ]^OUNDATION 



three segments with only lateral bristles ; fourth with 

 a marginal row of about 10; fifth sternite reddish 

 brown, deeply incised in the middle ; each of the sides 

 again incised so that there is a long lobe on each side 

 of the middle projecting backward, clothed with short 

 black hairs. The whole structure is soft and readily 

 shrivels. 



Hypopygium: First segment black, pollinose 

 and tessellated, with a row of stout bristles behind; 

 second segment yellow, globose, subshining, not bris- 

 tly; forceps long, slender, brown at base, the rest 

 shining black; in profile convex on front side almost 

 to tip; on hind side deeply concave for half their 

 length, where there is a prominent angle; from this 

 to apex nearly straight, the tip turned forward in a 

 slender point. The outer side of the forceps, except 

 the basal third, bears numerous short stubby erect 

 booklets. Accessory plate yellow, very small, the 

 free part slightly pointed. Both pairs of claspers 

 blackish, small and nearly straiglit, standing up oppo- 

 site the base of the penis. Penis with very short yel- 

 low basal segment; distal segment long and narrow, 

 shining black or brown, divided apically into two flat 

 plates, but little diverging and curved forward; on 

 the front side are a pair of long and wide plates of 

 rather soft consistency and brownish color lying 

 lengthwise of the organ. 



Legs black; middle femur with a short comb; 

 middle tibia with two bristles on outer front side ; hind 

 tibia not at all villous. 



Wings hyaline ; no costal spines ; third costal seg- 

 ment slightly longer than fifth; first vein bare; third 

 hairv nearly to crossvein. 



ft-' • 



Female. Front .347 of head (average of five, — 

 .332, .333, .345, .356, .367), with the usual orbitals 

 and outer verticals distinct, of nearly uniform width 

 almost to the antennae. Palpi distinctly clavate. Scu- 

 tellum without apicals ; third abdominal segment with- 

 out median marginals. Genital segment red, orifice 

 transverse; the red genital tergite has on tlie upper 



