HYMENOPTERA FROM SARAWAK. 135 



the femora and coxa; covered with long-, soft white hair ; as 

 with many species the apex of the hinder tibia} has a rufous 

 pile ; the tarsi are spiuose. Wings clear hyaline ; the nervures 

 and stigma deep black ; the cloud commences at the end of the 

 radial cellule and extends behind to the cubitus ; the angle form- 

 ed by the bending back of the third transverse cubital nervure 

 is hyaline. Abdomen black ; the second segment more or less 

 rufous ; the petiole is long and curved ; it is, if anything, longer 

 than the hinder tibiae and is covered with long white hair. The 

 apices of the segments are testaceous all round and more 

 broadly below than above. 



There are two teeth on the tarsal claws. The third cubital 

 cellule at the top is not much shorter than the second; at the 

 bottom it is longer than it ; the second recurrent nervure is 

 received close to the second transverse cubital ; the first at three 

 times greater the distance from it. The species comes near to 

 S. maria Bing. and S. nigellus Sm. 



Cerceris excavata, sp. nov. 



Black ; the lower inner orbits, the apex of the third and of 

 the sixth abdominal segments, pale yellow ; the four anterior 

 tibiae and tarsi and the base of the hinder tibiae, yellow ; wings 

 hyaline ; the radial cellule and the apical cubital cellule above, 

 smoky ; the area on the median segment not clearly defined, 

 rugosely longitudinally striated. 5 . 



Long : 7 mm. 



Hab. Borneo. 



Antennae black ; the scape pale yellow beneath ; the eight 

 basal joints and the apical joint of the flagellum reddish -brown. 

 Front and vertex rugosely punctured as is also the clypeus and, 

 to a less extent, the face ; there is a broad yellow line, roundly 

 narrowed at the top and bottom, on the lower inner orbits ; the 

 apex of the clypeus is slightly waved in the centre, the sides are 

 thickly fringed with stiff longish pale golden hair. Antennal 

 keel acute, and black and yellow. Thorax coarsely rugosely 

 punctured, black ; a spot on either side of the pronotum behind ; 

 the scutellum is smooth behind ; the median segment is coarsely 

 rugosely punctured ; the punctures are round and deep ; the 

 apex is hollowed in the middle ; the basal area is not clearly 



