of Fossorial Hymenoptera. 415 



from which a narrow curved line runs to the margin of the 

 vertex, where it is more or less interrupted ; the tips of the 

 mandibles also black ; the head and thorax black beneath ; 

 wings subhyaline, with a fuscous stain running from the base 

 of the marginal cell to the apex of the wing. The fourth 

 segment of the abdomen above, and the fourth and fifth beneath, 

 black. 



Hab. South Australia. 



Genus Philanthus, Fabr. 



PMlanthus niloticus. 



Female. Length 4 lines. Black, and variegated with bright 

 yellow spots and fascia?. Head : the mandibles, clypeus, sides 

 of the face as high as the insertion of the antennae, a lunate 

 spot above the clypeus, a large transverse semicircular spot in 

 front of the anterior ocellus, a transverse line above the ocelli, 

 and a broad line behind the eyes yellow. Thorax : the pro- 

 thorax, two abbreviated lines on the disk of the mesothorax, the 

 tegulse, the scutellum and postscutellum, an ovate spot on each 

 side of the metathorax, the tubercles, two irregular-shaped 

 spots beneath them, and the legs yellow ; the posterior femora 

 only yellow at their apex ; the wings hyaline and iridescent. 

 Abdomen : the second segment, a broad band on the first and 

 fourth segments, a narrow band on the two following, and the 

 apical segment yellow. 



Hab. White Nile. . 



PMlanthus elegans. 



Female. Length 4^ lines. Variegated with white, black, 

 and ferruginous. Head white in front and pale yellow behind ; 

 the vertex black, with a transverse white line between the 

 eyes above the ocelli, and a white tridentate spot in front of 

 them ; the flagellum ferruginous. Thorax very pale yellow, 

 nearly white ; a black spot on the prothorax ; and the meso- 

 thorax black, with four longitudinal white lines, the lateral 

 ones close to the tegulte, the two central lines running back- 

 wards a little beyond the disk ; a large triangular black spot 

 at the base of the metathorax above, and a central one behind 

 uniting with it ; wings hyaline, the nervures pale ferruginous ; 

 the thorax beneath and the legs pale yellow, with ferruginous 

 stains on the femora above. Abdomen pale yellow beneath, 

 with two black ovate spots on the second segment ; above, fer- 

 ruginous at the base and black beyond ; each segment with a 

 large transverse yellowish-white macula on each side and 

 nearly uniting in the middle ; the apical segment pale. 



Hab. Northern India. 



28* 



