298 Mr. F. Smith on neio Species 



frequently obliterated ; the anterior femora and the tibiae in 

 front, as well as the intermediate tibiae in front, yellow ; their 

 tarsi yellow beneath ; all the claw-joints yellow ; the wings 

 subhyaline, having a fuscous cloud in the middle. Abdomen : 

 the first segment with an angulated spot on each side ; the 

 second and third segments with a curved line on each side, 

 which unite in the middle of the segments ; the fourth segment 

 with two central minute oblique spots. 



The male resembles the female, but has no spots on the 

 thorax, and the posterior tibia? and apex of the femora are also 

 yellow beneath ; the second ventral segment has a compressed 

 obtuse tubercle in the middle, and the fascia? above are more 

 or less interrupted. 



Hob. Australia (Swan River). 



Benibex palmata. 



Male. Length 8 lines. Yellow beneath and black above, 

 with yellow markings. Head : a quadrate black spot on the 

 vertex, the rest of the head yellow ; the scape very stout ; the 

 flagellum gradually thickened to the apex of the eighth joint ; 

 the following joints much narrowed, and forming a hook- 

 shaped termination ; an elongate sulcation on each side of the 

 clypeus and labrum. Thorax : the sides of the mesothorax 

 above, a curved line on the scutellum, a line on the post- 

 scutellum, and a cmvcd transverse one crossing the metathorax 

 yellow ; the mesothorax lias on its disk two pear-shaped spots, 

 which are united to a narrow line which curves backwards to 

 the base of the scutellum ; wings hyaline ; the anterior tibiae 

 expanded at their apex ; the first joint of the tarsi dilated into 

 an oblong concavo-convex process, which is fringed behind 

 with black and ferruginous bristles. Abdomen yellow beneath 

 and black above, each segment with a broad yellow fascia, 

 which only leaves a narrow black apical margin ; the second 

 ventral segment compressed, forming a short tooth posteriorly. 



Hob. N. Australia. 



Bembex trident if era. 



Female. Length 7-8 lines. Black ; the thorax with yellow 

 markings, the abdomen with white ones. Head : the cheeks, 

 the mandibles, labrum, clypeus, and a tridentate shape above 

 it yellow ; the tips of the mandibles and two minute spots at 

 the base of the clypeus black ; a line at the side of the scape 

 and the flagellum of the antenna? above black. Thorax : the 

 margin of the prothorax, a line over the tegula?, which have a 

 spot in front, a spot on each side both of the scutellum and 

 postscutellum yellow ; a minute black spot at the apex of the 



