MACllOCERA. 51 



3. Costal border very distinctly yellow .... 4. 

 Costal border without yellow markings . . 5. 



4. Costal dark spots three in number, squarish 



and well-defined alternata^ sp. n., p. 52. 



Costal marks ill-defined Jiavicosta, sp. n., p. 53. 



5. All the tip of the wing palely infuscated ; 



a brownish streak from costa to middle 

 of wing, and a smaller brownish streak 



before it. Thorax all blackish bnmnea, sp. n., p. 53. 



Only a small infuscated spot at wing-tip, 

 barely reaching beyond upper branch 

 of 4th vein ; the brown mark in the 

 middle of the -wdug much darker, and 

 more clearly cut. Thorax yellowish, 

 with three blackish stripes eleyans, sp. n., p. 54. 



6. Species with blackish thorax and brownish 



yellow abdomen and legs inconsjncua, sp. n., p. 54. 



Species with reddish yellow or ferruginous 



thorax and abdomen ferriiginea, sp. n., p. 55. 



1. Macrocera ornata, sp. iiov. (PI I, fig. 1 ; PI. Ill, fig. 1.) 



S $ . Head brownish yellow, darker behind in male ; lighter 

 behind in female, vertex, epistoma and face darker brown ; palpi 

 yellow ; antennae (except 1st joint, which is yellow) missing. 

 Thorax : dorsum shining black, with a few short hairs on 

 shoulders, posterior corners and scutelluni ; traces of a pair of 

 oiitwai'dly curved, well separated rows of microscopic bristly 

 hairs. Sides of thorax shining blaclt in male, very dark shining 

 brown (almost black) in female, also scutellum and nietanotum ; 

 a little yellow around the thoracic stigma. Abdomen wholly 

 shining black, very shortly pubescent. Genitalia very large 

 and conspicuous ; a narrow bilobed dorsal plate ; a pair of large 

 thick prominent claspers, the second joint nearly as long but not 

 so thick as the first, and terminated by a pair of short stout black 

 claws ; an inner pair of small lamellae. The whole organ 

 brownish yellow with somewhat copious black hairs. In the 

 female normal, inconspicuous. Legs with coxae and femora 

 yellow, tibiae and tarsi brownish yellow in male, darker brown 

 in female ; legs minutely pubescent. Wings pale grey ; costal 

 border, marginal cell, upper part of basal cell and basal half 

 of 5th posterior cell rather bright yellow; a large dark brown 

 oval spot occupying the greater part of the distal half of the 

 wing, touching the costa but clear of the hind margin; a 

 very minute brown speck at absolute tip of wing ; two narrow^ 

 dark brown streaks, placed diagonally, the 1st commencing on the 

 3rd longitudinal vein (a little before the bifui'cation of the 4th), 

 running to the inner hind margin, and crossing the 5th posterior 

 and anal cells along their centres ; the 2nd streak runs from the 

 upper branch of the 5th longitudinal (close to the large brown 



e2 



