NEW GENERA AND SPECIES OF BRACONIDAE. 45 



medial longitudinal furrow apically, pleurae with an indistinct 

 costate furrow below; scutellum triangular, flatly convex on 

 the disc, two highly polished, indistinctly divided, shallow 

 foveae basally, a transverse, angulate, submarginal area apical- 

 ly smooth and shining declivous laterally; metanotum very 

 convex, divided medially by a broad, apically widening, longi- 

 tudinal furrow, with carinate lateral margins, the upper part 

 of the posterior face bearing several transverse carinae ; spiracles 

 small and circular. Abdomen elongate, corbiculate, rather de- 

 pressed at the base, 3rd and following segments more or less 

 convex dorsally, lateral margins carinate, 1st segment twice as 

 long as wide at the apex, the base very narrowly contracted, 

 2nd and 3rd solidly joined, 2nd quadrate, 3rd transverse, the 

 line of separation deeply impressed and costate, 4th and re- 

 maining segments transverse, the hind border narrowly smooth 

 and polished, practically all the 6th tergite so. Hypopygium 

 large, compressed, plowshare-shaped, ovipositor not longer than 

 the 6th segment. Legs, especially the posterior pair, long and 

 slender, the tibial spurs slender and curved. 



Wings hyaline, stigma lanceolate, radius emerging a little 

 behind the middle, 1st abscissa less than half the 2nd, 2nd 

 cubital cell twice as long as wide, recurrent nervure entering 

 1st cubital cell somewhat before the 1st cubital cross-vein, 

 nerveilus postfurcal, subdiscoidal nervure joining discoidal be- 

 low the middle. 



Hab. Malay Peninsula. One specimen. Collected by 

 F. Muir. 



Macrostomion amboinensis, n. sp. 



2 8 mms. long. Ochraceous, only the eyes, tips of man- 

 dibles and the area including the ocelli black. Head trans- 

 verse, eyes large and bulging, slightly emarginate on the inner 

 margin by the base of antennae, ocelli fairly large, oval, 

 arranged in an equilateral triangle on the sides of a small 

 prominence on the vertex, the lateral members removed from 

 the others and from the border of the eyes about the width of 

 their short diameter, from the occipital margin about twice the 

 long diameter; the face below the antennae is slightly bulged 

 and a median carina extends nearly to the clypeus ; behind the 

 antennae the^ head is considerably excavated ; the cheeks are 

 narrow. Vertex and cheeks smooth and shining, sparsely 

 punctured, the face finely rugose and hairy. The mandibles 

 are short and broad at the base, rugoso-punctate and hairy. 

 Antennae 46-segmented, long and slender but shorter than the 

 body, the socket of the first and second segments large and 

 conspicuously rimmed. Maxillary palpi 6-segmented, 1st and 

 2nd short, 3rd long, twice the 4th, both flat, 5th so to a less 

 degree and twisted on 4th, 6th slender and apparently further 

 subdivided; labial palpi 4-segmented. Thorax deep and 

 slender, not as wide as head, punctate and hairy, pronotum 



B. A. Soc, No. 80, 1919. 



