153 [December, 



of moderate length along its basal half, and having the distal half or apes bare ; 

 proboscis pendulous, rather longer than the depth of the head, pitchy-black, horny, 

 with the apex pointed in front, and having two small lips turned backwards. Palpi 

 clavate, nearly as long as the proboscis, whitish-yellow, clothed with short black 

 bristles, and long soft tawny hairs. Tliorax of a dull lead or slate colour, somewhat 

 arched, having a distinct transverse suture, and clothed on the dorsum with short 

 thick tomentum of an olive or tea-green colour, which is arranged in irregular shaped 

 but symmetrical patches, broken at the suture ; leaving a central longitudinal pale 

 stripe and a pale spot on each shoulder ; there are only a few fine setae on the 

 dorsum, but a number of shortish strong spines irregularly distributed on the sides. 

 Scutellum slate coloured, with some olive-green tomentum on the sides and apex ; 

 having four long setae and numerous short black hairs. Abdomen oblong-ovate 

 (spindle shaped), and sub-cylindrical in the male, with the apex incurved and 

 thickly clubbed, the hypopygium being large and furnished in front with two black, 

 horny, pointed processes ; in the female oval, and pointed at the extremity ; it is of 

 an uniform dull leaden colour in both sexes, immaculate, and almost smooth, having 

 only a few minute black hairs on the surface ; there are sis segments, the first is very 

 short, and so closely joined to the second, that they look like a single long one ; the 

 third, fourth and fifth are nearly equal in length, and so is the sixth in the female, 

 in the male it is globose and partly incurved ; in some specimens the posterior edges 

 of the segments have a pale yellow tinge. Wings rather long, of a pale yellowish- 

 bi'own colour, with black veins ; the third and fourth longitudinal veins diverge 

 gradually from each other from the site of the internal transverse to the apex of the 

 wing, which is placed almost in the centre between their points ; the internal trans- 

 verse vein is situated a little beyond the point of termination of the second branch 

 of the first longitudinal, and considerably beyond the middle of the discoidal cell ; 

 the external transverse is straight and upright, placed nearly one-third nearer to the 

 internal transverse than to the extremity of the fourth longitudinal ; the costal vein 

 is very slightly ciliated and without spine. Alulets small, white, with yellowish - 

 brown margins, and ciliated wifcli longpale yeflow hairs. Halteres with brown stiles, 

 and yellowish-white knobs. Legs of an uniform slate-grey colour, with large 

 whitish pulvilli and long black claws ; the tibiae are all armed witlx numerous long 

 bristles in botli sexes, but the coxge and femora are almost destitute of set£e ; the 

 front surfaces of the fore coxae, and the under-surfades of the mesosternum (triangular 

 plate between the fore and middle coxa>), as well as those of .the hind coxec, are 

 clothed with tufts of soft yellow hairs ; tlie fore-legs have the femora somewhat 

 thickened, and furnished with short soft yellow hairs on their under-surfaces, mixed 

 with short black ones, which also cover their outer and upper sides ; the tibiae have 

 four or five long bristles projecting from the distal halves of their under-surfaces ; 

 their outer sides and extremities are also armed with a number of spines ; the 

 middle of the inner and under-surfaces is also clothed with short adpressed golden- 

 yellow hairs, which extend along the whole under-surfaces of the tarsi ; the middle 

 legs have the femora almost smooth, the tibiae armed with a few spines or bristles ; 

 and the tarsi similarly but more shortly clothed with yellow hairs than in the other 

 legs ; the hind-legs have the femora clothed with short soft yellow hairs on their 

 under-surfaces, and have a few short black spines along their upper and outer sides, 

 which arc also covered with short black haii's ; tlie tibia; are somewhat curved, arc 



