326 



HYMENOPTERA. 



two black spots at the base of the clypeus, the tips of the man- 

 dibles ferruginous ; a triangular spot at the base of the clypeus, 

 an abbreviated line at the inner orbit of the eyes, and the outer 

 orbit entirely yellow. Thorax thinly covered with griseous pu- 

 bescence, most dense on the metathorax ; a line on the collar, a 

 spot on the tegulae in front, a line at their inner margin, and a 

 spot on each side of the scutellum, yellow ; the coxae and femora 

 black, the latter yellow at their apex beneath; the tibiae and 

 tarsi yellow ; the tibiae and basal joint of the tarsi black behind, 

 the anterior tarsi furnished with long cilia. Abdomen with the 

 first segment clothed with long griseous pubescence; on the 

 following segments it is very short, suberect and griseous ; the 

 first segment has a straight interrupted yellow band, segments 

 2-5 have an interrupted biarcuate yellow band. 



Var. fit. The basal half of the clypeus black. 



Var. j3. The antennae pale testaceous beneath, the apical seg- 

 ment of the abdomen with two yellow spots. 



Var. y. Two abbreviated lines on the mesothorax, a transverse 

 line in the middle of the posterior margin of the mesothorax, a 

 curved line on the scutellum and post-scutellum, and the coxae 

 and trochanters spotted with yellow ; the sides of the thorax 

 with large yellow spots. 



Hob. Australia (Hunter River ; Port Essington ; Swan River). 



This species closely resembles B.furcata, but it is smaller and 

 black behind, and the abdomen is covered with griseous pubes- 

 cence. Var. y. may possibly be a distinct species : a single spe- 

 cimen only has been received from Swan River. 



40. BEMBEX RAPTOR. B.M. 



Male. Length 6i lines. Black : the face covered with silvery- 

 white pubescence ; the anterior margin of the clypeus white ; a 

 line on the inner orbit of the eyes, three united spots in front of 

 the anterior stemma, a spot between the antennas and the scape 

 in front, pale yellow ; the outer orbit of the eyes yellow. The 

 prothorax yellow, with an irregular-shaped black spot on each 

 side, and a transverse oblong black spot above ; the meso- and 

 metathorax black ; the former has two central short stripes in 

 front, an epaulet over the tegulae, the posterior margin of the 

 scutellum and post-scutellum, yellow ; a curved yellow macula 

 on each side of the metathorax, and two oblong spots beneath 

 the wings ; the legs yellow, with the coxae, trochanters and base 

 of the femora black ; also a black spot on the anterior and inter- 

 mediate tibiae beneath; the wings clear hyaline, the nervures 

 black. Abdomen : all the segments have a borad glaucous- 

 yellow band ; that on the basal segment is notched in the middle 



