40 HYMENOPTERA FROM SARAWAK. 



sides in a straight line but curves broadly backwards to it; there 

 is a transverse, striated furrow on the apex of the third and 

 fourth segments. The sheaths of the ovipositor are broad and 

 thickly covered with stiff black hairs. 



This species is an Iphiaulax with the hairy ovipositor and 

 leg's of a Myosoma. 



Myosoma longicarinata, sp. nov. 



Long: 11-12 mm $ . 



Hab. Sarawak. ( Shelf ord). 



Antenna? entirely black, head rufous ; the face more 

 yellowish in colour ; it is smooth, sparsely punctured on the 

 sides and bearing some longish black hair ; the clypeus is 

 irregularly rugose. Mandibles black, the base broadly rufous. 

 Pro- and mesothorax rufous ; the median segment, the base of 

 the pleura and the lower part of the furrow black. The two 

 front legs are coloured like the thorax ; the middle have a 

 piceous tinge ; the tarsal spines are for the most part black. 

 Wings dark fuscous, with a violaceous hue; the stigma and 

 nervures are black. There is a stout longitudinal keel on the 

 basal half of the petiole ; the apical part is irregularly 

 longitudinally, stoutly striated ; the lateral depression bears stout, 

 transverse keels. The central part of the second segment is 

 obliquely narrowed towards the apex ; the central keel reaches 

 to the apex ; there is a smooth triangular area at its base and a 

 semicircular one at its apex ; the central part is reticulated 

 somewhat strongly ; the lateralis closely longitudinally striated. 

 The two transverse furrows are longitudinally striated ; the 

 second more finely and closely than the first. The third segment 

 is closely longitudinally striated and is broadly depressed in the 

 centre ; the fourth is more closely and finely striated, the third 

 and fourth segments are brownish. 



Myosoma fuscipennis, sp. nov. 



Long : 16 mm. terebra 16 mm. 



Hab. Borneo (Shelf ord). 



Antennae black; the scape piceous in the middle below. 

 Head mahogany coloured, smooth and shining ; the centre of the 

 face marked with some irregular transverse keels ; the sides are 



