HYMENOPTERA. 31 



beneath coarsely punctured ; the margins of the segments 

 smooth, shining and pic eo -ferruginous. 

 Hab. New Holland. 



47. PROSOPIS IMPRESSIFRONS, n. s. B.M. 

 Male. Length 4 1 lines. Black, head and thorax strongly punc- 

 tured, the clypeus and a small angular elevation above, as well as 

 a narrow stripe along the inner orbits of the eyes, bright yellow ; 

 a smooth, elongate, deep sulcation on each side of the clypeus ; 

 the scape dilated, concave behind; the flagellum fulvous beneath; 

 the mandibles grooved exteriorly, the stemmata placed in a 

 curve. Thorax, the collar slightly interrupted, a spot on the 

 tegulae in front, the tubercles, a lunate-shaped patch behind, the 

 scutellum and post-scutellum bright yellow ; the enclosed space 

 beneath smooth and shining ; wings fusco-hyaline ; both the re- 

 current nervures received about one-fourth within the second 

 submarginal cell; beneath very coarsely punctured; anterior 

 tibiae in front and the claws ferruginous ; posterior tibiae and all 

 the tarsi clothed with short white pubescence. Abdomen, the 

 basal segment finely, the rest much more strongly punctured, all 

 the margins smooth and shining; beneath covered with large 

 elongate scattered punctures. 



Hab. New Holland. 



48. PROSOPIS DESPONSA, n. s. B.M. 



Female. Length 4J lines. Black, abroad yellow stripe down 

 the centre of the clypeus, on each side of which is a smooth im- 

 pressed line ; above, on each side is a deep depression. Thorax 

 strongly punctured, the collar, tubercles, and a lunate-shaped spot 

 behind the scutellum and a large spot on the post-scutellum, 

 yellow ; the enclosed space beneath smooth and shining ; wings 

 subhyaline ; all the tarsi and posterior tibiae clothed with white 

 pubescence ; claws ferruginous. Abdomen, the basal segment 

 more finely punctured than the rest, and having laterally on its 

 apical margin a small patch of white pubescence, a little scattered 

 white pubescence along the sides of the abdomen, that on the 

 apical segments black ; beneath coarsely punctured. 



This is probably the female of P. impressifrons. 

 Hab. New Holland. 



49. PROSOPIS NUBILOSA, n. s. B.M. 



Female. Length 3 lines. Black, the head more elongate than 

 in P. nigrifrons, the clypeus beautifully aciculate, interspersed 

 with elongate punctures, having a spot near the anterior margin 

 and a narrow line along the margins of the eyes, yellow. Thorax 



