1901.] HYMENOPTER A OF THE " SKEAT EXPEDITION." 27 



either side at the base : on the inner side they are produced nar- 

 rowly and obliquely to the middle of the segment and outwardly 

 down the metapleurae, where they become much narrowed on the 

 lower end. On the pleurae there is an elongated pyriform black 

 mark near the tubercles. Legs coloured like the body ; the femora 

 and tibiae lined with black above ; the front tarsi are broadly 

 dilated ; the 2nd joint is roundly dilated on the outer side, the 

 dilated part is clearly separated ; the base of the joint is not con- 

 tracted ; the middle femora are not toothed beneath ; near the 

 apex on the lower side is a shallow 7 incision. The apical slope of 

 the basal segment and the apical third of the others are black ; 

 the black bands are dilated broadly and irregularly backwards in 

 the middle ; behind the middle of the segments are two narrow, 

 transverse, short lines ; the apical segment is black, with two 

 large, somewhat triangular yellow marks in the middle ; its apex 

 is broadly, bluntly rounded.] 



[Pison fuscipalpis, sp. n. 



Niger, nitidas, dense argenteo-pilosus ; cdis hyalinis, stigma te 

 nervisque nigris. § . 



Long. 6 mm. 



Hah. Singapore. 



Scape and pedicle of antennas densely covered with silvery 

 pubescence ; the flagellum less densely with a pale pile. The 

 lower part of the front and of the eye-incision, the face, and the 

 elypeus are densely covered with silvery pubescence ; the upper 

 part of the front and the vertex with short silvery pubescence ; 

 the front and vertex are shagreened and can hardly be called 

 punctured ; the front has a shallow but distinct furrow down its 

 centre. The mandibles are broadly rufous in the centre; the 

 palpi are fuscous. Thorax shagreened and thickly covered with 

 silvery pubescence. Pronotum clearly separated behind. The 

 basal part of the median segment has a distinct keel down the 

 middle ; a stout keel runs from the spiracles to the apex of the 

 segment ; the apex of the segment has an oblique slope ; on the 

 upper half is a deep furrow; on either side of this are five curved 

 striae. Wings clear hyaline ; the apex slightly inf uscated ; the 

 nervures and stigma are black ; the pedicle is longer than the 

 lower two transverse cubital nervures, which are roundly curved ; 

 the second recurrent nervure is received almost in the middle of 

 the cellule; the first recurrent about the length of the top of the 

 apical cubital cellule from the transverse cubital nervure. Legs 

 densely pruinose; the calcaria pale. The basal segment of the 

 abdomen is as long as the second segment ; the two are clearly 

 separated. 



The tegulac are piceous on the outer side ; the basal two segments 

 of the abdomen have their margins depressed ; the anterior part 

 of the pronotum is distinctly separated from the larger posterior 

 part ; both have oblique slopes. 



A distinct species From P. twpiciotut Sm., which i^ also from 

 Singapore. 



