HYMENOPTEIIA FROM SARAWAK. 133 



The transverse median nervure is nut interstitial, being 

 received shortly behind the transverse basal ; the first recurrent 

 nervure is received shortly beyond the middle ; the teguhe are 

 pale testaceous ; the third transverse cubital nervure is roundly 

 curved on the lower side ; the punctuation on the apical half of 

 the clypeus is coarser than on the basal and runs into striations 

 or obscure reticulations : the sides of the last ventral segment 

 are keeled and project obliquely at the apex ; the last dorsal 

 segment is punctured and thickly covered with black hair ; its 

 apex is smooth. 



A species closely related to -JSF. iridesceus Bin. 



Megachile zygia, sp. now 



Black ; the hair on the front, face, pleurae and median seg- 

 ment, ferruginous ; the abdominal segments banded with ferru- 

 ginous pubescence, the ventral scopa pale fulvous ; wings 

 hyaline ; the stigma and nervures rufous. Q . 



Long : 12 mm. 



Hab. Borneo. 



Head closely rugosely punctured ; the face and upper part 

 of the clypeus with a smooth, irrugular longitudinal keel in the 

 centre. The apex of the clypeus is transverse, finely rugose ; 

 its sides are straight and oblique. The base of the mandibles is 

 closely rugosely punctured, the upper apical half has, at the 

 base, some distinct punctures : the apical and the lower half 

 smooth ; the apical tooth is large, projecting, and becomes 

 gradually narrowed towards the apex ; the subapical is blunt 

 and indistinct ; on the base are two shallow curves, the inner 

 being the larger. The mesonotum is closely alutaceous, opaque, 

 without distinct punctures ; the mesopleurse are coarsely rugosely 

 punctured ; the metapleurae coarsely alutaceous. The hair on 

 the mesonotum and scutellum is short and dark, on the upper 

 part of the pleurae and the median segment it is rufous ; on the 

 lower parts and on the sternum, pale fulvous. Wings hyaline, 

 with a slight fulvous tinge ; the costa, stigma and nervures 

 are bright rufous. Abdomen black ; the dorsal segments banded 

 with a bright ferruginous pile ; the scopa pale fulvous ; the last 

 dorsal segment is covered with short black hair. Legs black, 

 covered with pale fulvous pubescence ; that on the tarsi is 



