x BACC1IA. 



tubercles; occiput dull bluck, grey pollinose, with a fringe of 

 glittering, stiff white Iriir ; face shining black towards the middle, 

 dullish and white pollinose on the sides, yellowish on the lower 

 portion of the cheeks and on the very narrow peristoma ; facial 

 tubercle not very prominent, rounded ; hairs on the side of the face 

 whitish and very soft. Antennae short, entirely orange-coloured, 

 the first two joints very short, the third bluntly ovate ; arista 

 longer than the antenna, brown, yellowish toward the base. Eyes 

 bare, apparently adorned with two transverse dark bands, one on 

 the middle, the other on the superior fourth. Thorax metallic 

 black, with purple and bluish reflexions, clothed with short, silky, 

 whitish hair, which, however, do not conceal four rounded spots, 

 two before and two behind the suture ; the sides and a band 

 along the suture are grey-dusted ; humeri with a broad rounded 

 yellow spot ; pleuive bluish black, with greyish dust and short 

 white hair. Scutellum finely punctate, wholly bluish black, with 

 very short dark hair. Squamulae very small, yellowish, without 

 fringes; halteres yellow, with darker knobs. Abdomen very narrow, 

 the stalk being formed by the second and the front half of the third 

 segments, the rest being very little dilated ; therefore the abdomen 

 appears to be more linear than spatulate ; second segment black, 

 reddish yellow towards the base, like the first, longer than the 

 third ; third, fourth, and fifth dark reddish yellow, shining, with a 

 narrow longitudinal blackish stripe, and two less distinct Literal 

 blackish stripes at the base of the third segment ; sixth segment 

 black ; after the sixth segment there are two other black segments, 

 terminated by a blackish bilobate scale, which forms a peculiar 

 ovipositor. Venter yellowish, black at the tip; the reddish seg- 

 ments are bordered by a very narrow black line on the exterior 

 sides ; the second segment and the constricted portion of the third 

 are clothed with thin erect white hair on the sides, the rest is 

 clothed with short depressed whitish hair. The four anterior legs, 

 with the coxae, wholly pale hit eons ; hind legs with bluish, 

 thickened coxae, black femora yellowish at the tip, black tibiae 

 yellow towards the base, and yellow tarsi a little darkened at the 

 apex. "Wings greyish hyaline, with black veins ; subcostal cell 

 and stigma wholly black ; a blackish elongate apical spot extends 

 from the end of the first to the end of the third longitudinal vein ; 

 third vein sinuous ; submarginal cross-vein very sinuous ; seventh 

 longitudinal vein not sinuous at end, the anal cell shaped as usual. 

 Type $ , a single specimen from Obuasi, Ashanti, 28. vi. 1907 

 (Dr. W. M. Graham). 



35. Baccha ichneumonea, sp. n. 



$ . Length of body 9 mm., of wing 6 mm. 



A medium-sized species, distinguished by its red and black 

 spotted abdomen and by the very long ovipositor of the female. 

 Not unlike a small Ichneumonid wasp of the genus Cri/ptus, and 

 resembling conifrons in having very small and not fringed squanmla>. 



