63 



ON TWO UNDESCRIBED GENERA AND THREE NEW 

 SPECIES OF ICHNEUMONID^ FROM BORNEO. 



By p. Cameron. 



Hemiphatnus, gen. nov. 

 Radius and cubitus almost united at the areolet, the only (the 

 basal) transverse cubital nervure being not much longer than thick ; 

 the recurrent nervure is received shortly beyond it ; the transverse 

 median nervure is received behind the transverse basal. Transverse 

 cubitus in hind wing broken near the top of the posterior third. 

 Metanotum smooth, with one transverse keel near the base ; the 

 spiracles longish oval. Basal two abdominal segments long and 

 slender, the first more so than the second. Thorax about four times 

 longer than wide, the parapsidal furrows deep ; the scutellum rounded, 

 not raised above the mesonotum, head wider than the mesonotum, 

 obliquely narrowed behind. Clypeus separated from the face, its apex 

 bluntly rounded. Antennse long and slender, not ringed with white, 

 the basal joints of the fiagellum long. Claws small. 



The type of this genus is a much more slender insect than 

 the majority of the Mesostenini, especially as regards the abdo- 

 men and the antennae. Characteristic also is the very smooth 

 body, including the metanotum. Of the Malay genera, its 

 nearest ally seems to be Lactolus, which, however, has the 

 thorax striated, the antennae thicker, and the areolet is much 

 larger and closed at the apex. 



Hemiphatnus nignpalpis, sp. n. 



Entirely smooth and shining, yellow ; the antennae, palpi, man- 

 dibles, middle of front broadly, the occiput, except for a triangular 

 spot (the narrowed end below) at the eyes, the pronotum except 

 narrowly at the apex, a large triangular mark on the upper half of 

 the pro pleurae, its narrowed end at the base, the mesonotum, the 

 metanotum at the base behind the keel, the extreme base of the first 

 abdominal segment, black ; the apical three-fourths of first, second 

 abdominal segment, the basal half of the third, more than the basal 

 half of the fourth, and the other segments above, brown. Wings 

 hyaline, the stigma and apical nervures fuscous, the basal nervures 

 black. ? . Length, 13 mm. ; terebra, 2 mm. 



Kuching, Borneo (John Hewitt, B.A.). 



Legs pale yellow ; the four anterior femora black behind, the 

 apices of all the tibiae (almost the apical fourth), the extreme base of 

 the posterior and the tarsi, black ; the hind femora brownish black ; 

 the tibiae and tarsi shortly spinose. Hind coxae about four times 

 longer than thick. The furrow on the lower part of the mesopleurae 

 is roundly curved and smooth. The brown colour on the basal abdo- 

 minal segment is blacker than it is on the others. 



■^o'- 



Talorga, gen. nov. 



Wings without an areolet, the transverse cubital nervure short. 

 Radial cellule long, reaching to the apex of the wing, the radius 



