HYMENOPTERA FROM SARAWAK. 75 



Mntilla olbia, sp. no v. 



Black, densely covered with longish pale hair ; the first, 

 second and the base of the third abdominal segment red ; wings 

 fuscous-hyaline with a violaceous tinge ; the stigma and ner- 

 vures testaceous, 5 • 



Long : 15 mm. 



Hab. Penrissen, 4500 feet, Sarawak. 



Antennae densely covered with a pale pile ; the second and 

 third joints together are equal in length to the fourth. Head 

 distinctly narrower than the thorax; roundly, obliquely nar- 

 rowed behind the eyes ; the vertex strongly but not very close- 

 ly, punctured ; the front more closely rugosely punctured ; the 

 vertex sparsely, the front more thickly covered with long ful- 

 vous hair. Clypeus depressed in the middle ; the edges rounded 

 and forming a semicircle ; the apical tooth of the mandibles is 

 long, rounded at the apex ; the subapical one is short and blunt. 

 Thorax thickly covered with long fulvous hair ; the pro- and 

 mesonotum closely rugosely punctured ; the scuiellum is more 

 closely punctured. Median segment closely reticulated; the 

 basal three central areas larger than the others ; the central is 

 longer than the others. Propleura? at the base rugosely punc- 

 tured ; the lower part of the apex with five stout keels ; the 

 central, raised part of the mesopleurae is punctured but not 

 deeply or strongly ; the base of the metapleurse smooth, the 

 apex reticulated. The third transverse cubital nervure and the 

 second recurrent are faint; the first transverse cubital ner- 

 vere is oblique and rounded ; the second is roundly curved and 

 not obliquely sloped ; the second cubital cellule at the top is 

 shorter, at the bottom longer than the third : the recurrent ner- 

 vures are received near the base of the apical third of the 

 cellules. Legs thickly covered with white hair ; the spines and 

 calcaria white. On the abdomen the first, second, and the base 

 of the third segments are rufous ; the basal five segments are 

 covered with long pale, the apical with black, hair ; the ventral 

 keel is slightly dilated at the base, roundly narrowed at the 

 apex ; the last segment above has the apical two-thirds broadly 

 smooth in the middle ; below it is strongly punctured, except 

 at the apex, which is smooth and rufous. 



