IIYMENOPTERA FROM SARAWAK. 67 



Metapleuras coarsely obliquely striated ; the strite are irregular 

 and more or less wrinkled ; the base is aciculated behind the 

 furrow, which is wide and deep; the upper part is irregularly, 

 the median segment from the keel finely and closely transver- 

 sely striated ; the apical slope is rufous. I he middle of the 

 propleune, the greater part of the meso- and the meta- below the 

 keel are closely and finely longitudinally striated. Legs black ; 

 the hinder coxa. 1 rufous ; the fore femora and tibite more or less 

 testaceous, especially in front, the apical two-thirds of the basal 

 joint of the hinder tarsi, the second, third, fourth and base of the 

 fifth joints, white. Wings fuscous-hyaline ; the nervures and 

 stigma black ; the second transverse cubital nervure is almost 

 obliterated. Abdomen black ; the sixth and seventh segments 

 broadly above and the eighth narrowly white. 



t^Mesostenus Shelfordi, sp. nov. 



Niger ; labro abdominisque apice albis ; coxis posterioribus 

 runs ; alis hyalinis, stigmate nervisque fuscis 5 . 



Long : 9 mm. 



Hab. Sarawak, Borneo (Shelford). 



Head black ; the labrum and palpi white. Mandibles black, 

 whitish-testaceous near the middle. Face opaque, closely but 

 not very distinctly, punctured : the clypeus smooth and shining, 

 front and vertex alutaceous, shagreened ; the upper part of 

 the front is furrowed in the centre. Pro- and meso- thorax 

 smooth and shining and with a plumbeous hue. Median segment 

 opaque ; above closely, but not very strongly, transversely 

 punctured. Wings clear hyaline ; the stigma and nervures 

 fuscous. Legs black ; the four posterior coxse orange red ; the 

 front coxte black, pale at the apex ; the four front legs are 

 fuscous ; the hinder tarsi are white, except narrowly at the 

 base. The abdominal segments are narrowly lined with dull 

 white at the apex ; the apex of the fifth and the sixth and the 

 seventh entirely, are clear white. 



This is a Mesostenus as denned by Ashmead in his generic 

 revision of the Ichneumonidm (Bull. II. S. Nat. Mus. XXIII. 44) — 

 The keel on the mesopleurai curves broadly and roundly up- 

 wards on the apical half; the basal keel on the median segment 

 is complete ; the apical one does not reach to the sides ; the 



