208 PSYcnoDiD.5:. 



the length of the 3rd, which is a loug as the 4th and 5th together. 

 Antennae with 1st scapal joint short, rather slender ; 2nd sub- 

 spherical, bearing a circlet of about twelve slender, spatulate, 

 curved scales, and (nearer the base) a circlet of stiff flattened 

 bristles. riagelliun with three or four somewhat irregular 

 verticils of stiff line hairs to each joint ; 1st joint double the 

 length of the 2nd, the remainder gradually diminishing in 

 length. Thorax covered with bro^'n, or brownish yellow, thick 

 bristly hair, with bunches of long, blackish, more or less erect, 

 curved, flattened, bristly hairs, which exhibit silvery reflections in 

 certain lights ; these arise from sockets provided with raised rims. 

 Sides of thorax cream-coloured, conspicuously lighter than the 

 dorsum, with bristly hairs around the base of the legs only. 

 Scutellum dark, and, with the metanotum, covered with concolorous 

 hairs. Abdomen slender and cylindrical in both sexes, closely 

 covered with blackish bristly hairs, the emargination of the 

 segments often blackish. Genitalia of male with all the appen- 

 dages long and apparent ; the upper appendages with the distal 

 joint considerably shorter than the proximal one, bearing five 

 stout pointed choetje, each nearly as long as the joint, arranged as 

 follows : — a single chseta at a point about a third of the length of 

 the joint from the base, a pair of slightly unequal chtetse near the 

 middle of the joint, and a terminal equal pair ; -the proximal joint 

 slightly longer than the last apparent segment of the abdomen ; 

 the intermediate appendages small, consisting of a stout, bluntly 

 pointed, dorsal lobe and a small ventral lobe which is a minute 

 pointed process bearing a bunch of bristles at the tip and attached 

 to the ventral margin of the dorsal lobe ; the inferior appendages 

 somewhat slender, laterally compressed, longer than the basal 

 joint of the upper ones, obliquely truncated, devoid of spines, 

 covered with stout hairs, which form a dense brush at the tip of 

 the appendage ; a distinct elbow not far from the base of the 

 appendage ; the intromittent organs are relatively long, 

 ensiform, consisting of two slender, pointed lateral valves, 

 between which a pair of long filaments can be protruded. In the 

 female the upper appendages somewhat widely separated from 

 the lower ones, which ai'e small, pointed, and claw-shaped. 

 Legs Yevj long, the hind pair being about three times as long as 

 the thorax and abdomen together ; femora much shorter than the 

 tibiae ; metatarsi in all cases at least as long as the remaining 

 tarsal joints combined. All the legs with strong reflections 

 making the tibiae and tarsi appear silvery white in certain lights ; 

 the femora hear narrow flattened spatulate brownish scales and 

 fine bristly brown hairs similar to those of the body ; the tibiae 

 and tarsi covered with closely impressed angularly bent scales, 

 and bearing, especially at the joints, .slender stiff straiglit hairs. 

 Wings narrow, obtusely pointed at tip, nearly three times as long 

 as broad at the widest part. The 1st longitudinal vein ends just 

 before two-tliirds of the wing's length, the 2nd forking barely before 



