122 HYMENOPTERA OF SARAWAK. 



Mesonotum distinctly punctured, the punctures clearly 

 defined and separated ; the 2nd and following abdominal seg- 

 ments closely and distinctly punctured. 



Length nearly 15 ; terebra nearly 5 mm. 

 Hab. Kuching. June. 



Ophionina. 



Pleuroneurophion malayanus, sp. nov. 



Dark luteous, the apical half of the abdomen darker colour- 

 ed, the face, clypeus and orbits pallid yellow ; the mesosternum 

 blackish ; wings hyaline, the nervures and stigma blackish. $ . 



Length 20 mm. 



Hab. Borneo. 



Head smooth, shining and almost bare. Mesonotum darker 

 coloured than the scutellum, closely, minutely punctured. Sides 

 of scutellum keeled, the keels becoming indistinct towards the 

 apex which is broadly rounded ; the base obscurely punctured, 

 the rest not very strongly or regularly longitudinally striated. 

 Post-scutellum broader than long, projecting, rounded from the 

 base to the apex. Base of metanotum smooth, the basal depres- 

 sion stoutly, but not closely striated ; the rest closely, stoutly, 

 irregularly transversely striated and reticulated, the sides with 

 a bordering keel. Pro- and mesopleurae closely, minutely punc- 

 tured and covered with a fine down ; the upper part of the 

 meta- stoutly, obliquely irregularly sriated. The basal abscissa 

 of the cubito-disco-nervure is slightly curved upwards at the 

 base, slightly, but more distinctly, downwards at the apex before 

 the angle which is distinct but does not bare a stump of a ner- 

 vure. Cubitus in hind wings roundly curved. The part of the 

 cubito-disco nervure before the angle is distinctly shorter than 

 that between it and the recurrent nervure. 



This species differs from P. grandis in the disco-cubital 

 nervure not being angled before the middle, but otherwise it 

 agrees with the main features of the genus, e. g. in the trans- 

 verse median nervure being received behind the transverse basal, 

 in the radius being thickened at the base and in the trans- 



Jour, Straits Branch 



