10 SYJIPIUDJE. 



7. Chrysogaster (Ortlioneura) pcecilops, sp. n. 



c? . Length 6'5 mm. 



Nearly allied to the European nobilis, Fall., but at once dis- 

 tinguished by the spotted eyes, shorter rectangular third antennal 

 joint, and hyaline wings. It is also allied to my pcecilopJithcdma, 

 and belongs to the same group, but may be distinguished at once 

 by the bare eyes and by the thorax being without black pattern. 



Head shining aeneous, clothed with whitish hair, which is 

 longer on the broad frontal triangle and wanting towards the 

 middle of the face ; anterior edge of buccal cavity very prominent ; 

 vertical triangle blackish, much smaller than in nobilis, while the 

 eyes are in contact for a greater distance ; eyes bare, with many 

 confluent brown spots, which are very different from those of 

 nitida, Wied., and like those of poecilophthalma ; antennae dark 

 yellowish brown, the third joint only twice the length of the first two 

 together, rectangular, but rounded at the end; arista blackish, quite 

 bare. Thorax shining aeneous, but lightly punctate and rather 

 dullish, with short white hair, longer on the pleurae ; with two 

 approximated longitudinal dorsal w r hite stripes in front. Scutellum 

 large, margined, coloured, and punctate like the thorax. Squamulae 

 rather large, white, the inferior with a very long white fringe ; 

 halteres pale yellowish ; plumulae white. Abdomen not margined, 

 shining aeneous, with white pubescence, which is longer on the belly ; 

 the whole disc dull black ; the last segment simple ; genitalia large, 

 highly polished, twisted to the right. Legs strong, wholly 

 blackish aeneous, with very short pubescence ; the basal joints of 

 fore and middle tarsi a little thickened. Wings wholly hyaline, 

 without any distinct pattern ; stigma and veins yellowish, the 

 latter darkened towards the end; subapical cross-vein perpendicular, 

 not recurrent ; vena spuria distinct, but not chitinised. 



Type c? , a single specimen from Durban, Natal (jP. Muir). 



8. Chrysogaster (Orthoneura) spiloptera, sp. n. 



5 . Length 5 mm. 



An elegant blackish-aeneous species, with unspotted eyes and 

 black legs, velvety black bands on abdomen, and a wing-pattern 

 recalling that of the North- American species nit id a, Wied. 



The present and the following species, known only in the female 

 sex, are evidently related and unite the characters of Orthoneura 

 with those of Liogaster, to which they should be referred if the 

 eyes of the male prove to be separated ; in neither species, however, 

 has the frons of the female any transverse furrows. They both 

 live in swamps, like our European species. 



Head very large, hemispherical, shining black with faint bluish 

 reflexions ; frons broad, very long, smooth, gently convex in the 

 middle, almost bare, more shining and aeneous above the antennae, 

 with only the beginning of a few oblique furrows near the base ; 

 face carinate below and produced towards the mouth-edge, bare, 

 lightly rugulose towards the sides ; eyes bare, dark brown, with no 



