NEW GENEEA AND SPECIES OF BBACONIDAE. 53 



flagellum filamentous, opaque and hairy; face longer than 

 wide, convex, almost angulate below, dorsal margin bidentate 

 between the eyes, lateral margin foveate below eye; labrum 

 almost quadrate; cheeks as long as short diameter of eye; 

 trophi pallid. Pronotum narrow, pleurae widening and con- 

 cave; mesonotum flatly convex; a broad costate furrow along 

 the lower margin of mesopleurae; disc of scutellum small, 

 triangular, depressed apically, bif oveate basally ; intersegmental 

 furrows separating the thin pleurite between the mesopleurae 

 and metapleurae margined by deep broad costate grooves; 

 metanotum areolate, disc traversed by four longitudinal and 

 many irregular transverse carinae, posterior face 5-areolate. 

 Abdomen basally depressed, compressed apically, 2nd and 

 following segments with a transverse fascia of hairs, 1st 

 tergite lignlate, widening posteriorly but considerably longer 

 than the greatest width, 2nd and 3rd separated only by a thin 

 furrow, 2nd deeply impressed across the middle and anteriorly 

 along the sides; 3rd and following segments transverse and 

 compressed. Hind legs longer than the anterior ones, coxae 

 stout, femora rather short. Wings dark brown basally, hya- 

 line beyond the stigma, radial cell short and narrow, 1st ab- 

 scissa of the cubitus almost completely obliterated, 2nd cubital 

 cell quadrate. 



Hob. Piroe, Ceram. Two specimens. Collected by F. 

 Muir. 



Biroia ochracea, n. sp. 



9 10 mms. long. Smooth and shining, punctate and 

 hairy, the metathorax heavily clothed, abdomen polished; 

 brownish ochreus, the eyes, flagellum, segments 4-8 of the ab- 

 domen and sheaths of the ovipositor black. 



Head transverse, wide between the eyes, which are pro- 

 minent and bulging, viewed from in front triangular, ocelli 

 arranged in an equilateral triangle on the vertex, about 1 

 diameter apart, 5 from the border of eye ; front excavated and 

 margined behind to ocelli; antennae joined close to the eye, 

 widely separate, the lateral emargination continued around the 

 base, 1st segment small, 2nd stout, half as wide as long, 3rd 

 half as long as wide, flagellum filamentous, opaque and hairy; 

 face wide between the eyes, narrowed below, dorsal margin be>- 

 tween eyes bidentate, lateral margins with a deep fovea mid- 

 way between eye and mandible, labrum semicircular, cheeks 

 nearly as wide as short diameter of eye. Pronotum narrow, 

 widening greatly on the pleurae; mesonotum flatly convex; 

 pleurae and sternae bulging, separated by a wide costate fur- 

 row; disc of scutellum convex, semicircular, a wide and deep 

 groove in front divided by a median carina; grooves separat- 

 ing the thin pleurite between the mesopleurae and metapleurae 

 costate; metanotum areolate, lateral posterior angles denticu- 



R. A. Soc, No. 80, 1919. 



