TRYPETIDAE. 87 



the hind border of the last abdominal segment brownish, and the 

 short hairs in the middle of the abdomen mostly blackish. Front 

 of middle breadth. Face rather narrow, descending almost per- 

 pendicularly, slightly excavated; border of the mouth not promi- 

 nent. Antennae yellow, reaching a little beyond the middle of the 

 face ; the third joint not broad, with the bristle having a very short, 

 hardly visible pubescence. Opening of the mouth rather large, 

 raised a little anteriorly. Proboscis and palpi of middle size. 

 Cheeks descending a little beneath the eyes. The foremost of the 

 two pairs of bristles inserted in the middle of the thorax is close 

 by the transverse suture. Scutellum with four bristles. Abdo- 

 men sometimes brownish-tawny, leaving the hind borders of the 

 segments paler ; this color seems to result from desiccation, since in 

 some individuals the abdomen is uniformly yellow. The borer is 

 conical, narrow, not flattened, nearly as long as the four last ab- 

 dominal segments taken together, blackish-brown in well-colored 

 individuals, red with black extremity in more recent individuals. 

 Wings hyaline, the reticulation being blackish-brown, paler and 

 yellowish-brown near the base and in the middle of the wing. In 

 the middle of the wing there are only a few drops of considerable 

 size, four of which are remarkable for their regular position and a 

 more whitish appearance ; one of these drops is above, the second 

 before, the third behind the small transverse vein, the fourth in the 

 discal cell nearly before the posterior transverse vein. The reticu- 

 lation sends the following blackish-brown rays to the border of the 

 wing : 1. A narrow one to the middle of the exterior costal cell ; 

 2. A narrow one to the tip of the auxiliary vein ; 3. A broader 

 one, the end of which is sometimes separated as a spot, to the 

 middle of the stigma, and another being sometimes confluent with 

 it, to the end of the first longitudinal vein ; 4. A narrow one 

 rising from the first of the four drops enumerated above ; 5. A 

 very broad one reaching the border of the wing between the fore- 

 going ray and the tip of the second longitudinal vein ; 6. A ray 

 running to the tip of the second longitudinal vein ; f. A ray end- 

 ing between the tips of the second and third longitudinal veins ; 

 8 and 9. Two rays running to the tips of the third and fourth 

 longitudinal veins ; 10 and 11. Two rays crossing the second pos- 

 terior cell, the second of which joins the reticulation, which is 

 formed by a few large drops, and fills the hind part of the wing as 

 far as the axillary incision. Small transverse vein a little inclined 



