<)7(i FROCEKDINGS OF THE NATIONAL MUSEUM. vol. .xxvm. 



Genus BIOSTERES Forster. 

 24. BIOSTERES LONGICAUDATUS, new species. 



Feiituh. — Lengtli, 3.2 mm. ; ovipositor longer than the whole insect. 

 Uniformly brownish-yellow, the eyes })rown, the antennae ver}' long-, 

 g'radually l)eeomino- black from the basal fourth, the sheaths of the 

 ovipositor ])lack. 



The head and the thorax, except the metantoiim, are smooth and 

 impuiictate; the parapsidal farrows are deep and converge and meet or 

 unite just in front of the scutellum, the latter with a bi'oad deep fur- 

 row at base, which is separated into two by a delicate median carina; 

 the nietanotum is areolated and punctulate. Wings hyaline, the 

 stigma and veins brown. The abdomen is a little longer than the 

 head and thorax united; it is smooth and impunctate, except dorsal 

 segments 1 and ^, which are more or less longitudinally striated. 



7//7>t'.— Cat. No. 8319, U.S.N.M. 



Manila. (Father Robert Brown.) 



Genus RHYSSALUS Haliday. 



25. RHYSSALUS UNICOLOR, new species. 



Fe)n(ih. — Length 1.5 mm.; ovipositor shorter than the hind tarsi. 

 Brownish yellow, the sutures of the three-segmented abdomen })lack- 

 ish; stemmaticum l)lack; e^^es purplish brown; antennae toward base 

 (the first five or six joints), the palpi, and the legs white or yellowish 

 white. Wings hyaline, the stigma, except at apex, and the internal 

 veins, except as Iiereafter noted, 3'ellowish white; the apex of the 

 stigma, the radius, and the costal veins brownish. Head and thorax 

 smooth, the nietanotum with a forked carina. The abdomen is longi- 

 tudinally striated, the segments subopaque. 



7)//>e.— Cat. S320, U.S.N.M. 



Manila. (Kobert Brown.) One specimen. 



Genus RHOGAS Nees. 



26. RHOGAS MELANOSOMA, new species. 



Mali . — Length 4.5 mm. Head and thorax brownish yellow, the 

 ocelli pale and placed on a ])lack spot, the e3'es black; the antennte, 

 except the first two joints, a spot at apex of the middle and hind fem- 

 ora, more or less of the base and apex of the hind tibife, the hind 

 tarsi, and the whole dorsum of the al)domen, are black. The abdomen 

 is rugulose, the first, second, and third segments with a median longi- 

 tudinal carina, that on the third sut>obsolete. Wings hyaline, the 

 stigma and veins brown. 



ry^>.'.—Cat. No. 8321, U.S.N.M. 



Manila. (P^ather Brown.) 



