4 PROCEEDINGS OF THE NATIONAL MUSEUM vol.69 



Osten Sacken perceived that the species could not belong to Achias, 

 and Hendel refeT-rred it to the family Trypetidae. 



The locality originally given was simply "East Indies." Our 

 specimen is from western China. It is easily identifiable by the 

 characters mentioned and figured by West wood. 



Female. — Eyestalks each about 4 mm. long, extending obliquely for- 

 ward, diverging from each other at an angle of about 95°; each stalk 

 bears a black stripe above and one in front; aside from these stripes 

 and a slight darkening in the largest portion of the abdomen the color 

 is wholly reddish yellow. The head is globose and the stalks arise 

 from the anterior portion, giving a very different effect from Achias, 

 Richardia, etc. Directly behind the stalk the side of the head is trans- 

 parent over a large area. The ocellar triangle is a little anterior to 

 the vertex, and on account of the globosity of the back of the head it 

 is about equally distant from the front and hind margins. The only 

 bristles I can make out on the head are a single pair of reclinate ver- 

 ticals, rather far apart, standing close to the black stripe of the stalk 

 which continues almost to the neck; and the remains of a small pair 

 of postverticals, which are in such poor condition that I can not tell 

 whether they are convergent or divergent. Front long, sloping 

 obliquely, bare ; lunula covered, face very receding, margin of mouth 

 slightly prominent. Oral cavity rather large; proboscis and palpi not 

 distinctly visible; third antennal joint rounded at tip, about one and 

 a half times the second ; arista with distinct, erect plumosity to the 

 tip. Eyestalks with smallest diameter a little before the middle, grad- 

 ually enlarging beyond; they have a few small hairs near base which 

 increase in number until they are quite noticeable just before the eye. 

 ThiTC is also some yellow hair all the way around the neck. 



The thorax is not in very good condition to describe the chaetotaxy 

 as it is considerably denuded and a little soiled. There are no acros- 

 tical bristles and no dorsocentrals, unless perhaps one pair close to the 

 scutellum. The calypters are very minute, almost absent. The first 

 abdominal segment is longer than the two following; the second to 

 fourth are almost of the same length, while the fifth is as long as the 

 two preceding. The only bristles I can make out are a row of about 

 six small ones on the hind edge of the fifth segment, and two above 

 and two below, near the tip of the sixth segment or ovipositor; this 

 segment is conical, not flattened, and covered with dark hair, hke the 

 ones preceding it. 



The legs are slender, none of the femora thickened or spinose; 

 middle tibia with one large and two or three small bristles ou the 

 imder side at tip, none on front and hind tibia. 



Wing as figured by Westwood, the anal cell drawn out in a short 

 point ; the auxiliary vein joining the costa almost at a right angle, 

 and the humeral cross vein oblique; the posterior cross vein is near the 



