172 DOLICHOPID^E. 



the following section. Lastly, D. azureus, Mq., a species pro- 

 bably allied to D. nitidus, if distinct. 



Section A A. Hind metatarsus unarmed. 



First come the species (39-46) with the cilia of the lower 

 orbit pale ; the first joint of the hind tarsus (spineless except 

 beneath) not much shorter than the second; the lamellae of the 

 male broad, generally dusky, and fringed at the tip. 



Stanniua has made a peculiar genus of those (sp. 39-42) which 

 have the face elongated, descending in front of the proboscis 

 lower than the eyes. In these the arista is glabrous, slender, 

 curved only at the thickened base, the penultimate joint far 

 shorter than the last ; the four exterior joints of the fore tarsus 

 compressed, and together not longer than the metatarsus, in the 

 males dilated, and often leathered above; the femora rather hairy 

 beneath, the posterior, or at least the hind pair, with several 

 spines in front ; the subapical vein oblique, ending some distance 

 before the tip of the wing, and approaching very close to the 

 cubital ; its slight flexure and the discal transverse vein usually 

 shaded with brown ; the alulse fringed with black hairs and pale 

 pubescence. The colours also are rather peculiar ; the thorax 

 being coated above, especially in front, with a yellowish dust, 

 composed of round, flat, microscopic scales ; the abdomen che- 

 quered with a changeable hoary gloss, the dorsal stripe and the 

 incisures being blackish. 



39. insignis, Stn. isis, xxviii. 270. 3 (1831); Stg. ; Ztt. 

 cens, thorace opaco flavido-cinereo, antennis niyris, articulo primo luteo, 

 femoribus apice, tibiis, metatarsis anticis tarsisque posterioribus flams, 

 fjeniculis korum niyris, femoribus posticis pluri-spinosis, alis hyalinis ; 

 Mas. metatarso antico articulis reliquis atris pennatis sesquilonyiore, 

 hypostomate ochraceo ; Jcem. hy post ornate albo. Long. 2^; alar. 4i lin. 



Greenish-brassy. Front with an oclireous tinge. Face ochre-yellow 

 in male, yellowish-white in female. Antenna black, first joint tawny 

 yellow, third somewhat ovate. Thorax opake, greenish-grey, with 

 coppery streaks and oclireous dust. Wings hyaline; in the female 

 darker, with the transverse vein and a dot faintly brownish ; the latter 

 about the middle of the subapical vein ; the transverse vein undulated. 

 Abdomen chequered. Lamellae dusky, rather oblong-obovate, with 

 long cilia ; internal appendages prominent, forceps narrow triangular ; 

 outer lobe of aculeus short and broad. Legs long and slender ; coxre 

 and base of femora blackish-green with a hoary shade ; the tip of tlie 

 femora largely (the middle pair almost entirely), the tibia, posterior tarsi 

 and fore metatarsus, light yellowish ; the tips of the tibiae and joints of 



