28 mr. p. Cameron on thb [May 7, 



CrABRONIDjE. 



[Crabro iMrETUosus, sp. n. 



Niger, abdomine macidis flavis sex ; geniculis tibiisque Jlavo- 

 lineatis ; alis hyalinis, iiervis stigmateque nigris. $. 



Long. 6-7 mm. 



Hub. Singapore. 



Head black ; the front and vertex almost bare, alutaceous ; the 

 ocelli are in a curve, the hinder are separated from each other by 

 a slightly less distance than they are from the eyes, which, on the 

 inner side above, are obliquely narrowed. The sides of the clypeus 

 are thickly covered with silvery pubescence ; the middle has a 

 distinct keel. The basal half of the mandibles is yellow. Thorax 

 black, opaque ; yellow are two lines on the pronotum, two marks 

 on the scutellum, and the tubercles. The postscutellum is longi- 

 tudinally striated. The base of the median segment is depressed 

 and bears stout keels ; the basal area is defined by a wide furrow, 

 ■which is traversed by the striae ; the apical half has a deep furrow- 

 in the centre ; the sides of the segments are bounded by a stout 

 keel, at the base of which, on the inner side, are two small areae. 

 Propleurae strongly aciculated ; the hinder part is striated. Meso- 

 pleurae alutaceous ; the furrow is crenulated ; the apex is obliquely 

 narrowed, with a keel at the base, behind which is a narrow crenu- 

 lated furrow. Metapleurae closely and minutely striated, except 

 at the base above, where there is a strongly striated part, bordered 

 behind by a furrow. Wings clear hyaline ; the nervures black ; 

 the radial cellule is slightly infuscated. Legs black ; the four 

 anterior knees, the tibiae (except broadly behind), the hinder tibiae 

 behind (except at the apex), and the calcaria yellow. The petiole 

 is nearly as long as the following three segments united; it is 

 opaque and dilated at the apex ; there are two yellow oblique 

 lines in the middle of the 2nd segment, two longer ones on the 

 base of the 3rd, and abroad one on the base of the 4th ; the latter 

 is slightly incised in the middle at the apex.] 



[Trypoxylon varipilosdm, sp. n. 



Nigrum, abdomine rufo, petiolo nigro ; pedibus tegtaceis, tarsis 

 posticis nig ris ; facie clypeoque dense aureo-pilosis ; cdis hyalinis, 

 iiervis nigris, stigmate fusco. $ . 



Long. 16 mm. 



Hab. Singapore. 



Antennae testaceous, paler towards the base. The front and 

 eye-incisions are covered w 7 ith golden pubescence ; on the face and 

 clypeus the pubescence is denser and more silvery in hue. The 

 apex of the clypeus is rufo-testaceous ; its middle broadly but not 

 very much projects, the projection is slightly waved in the centre. 

 Mandibles testaceous, paler, more yellowish towards the apex. 

 The upper part of the front is broadly but not deeply furrowed ; 

 the lower is stoutly keeled. The hinder part of the head is 

 thickly covered with golden-silvery pubescence. Thorax smooth 



