HYMENOPTERA. 23 



appears to be of a variety, the insect being usually entirely 



black. 



Hab. Albania ; S. France ; Italy. 



20. Prosopis anthracina, n. s. B.M. 



Female. Length 2i lines. — Entirely black, head and thorax 

 very finely punctured, the apical joints of the antennse testaceous 

 beneath. Thorax, the tegulse testaceous, the wings hyaline, the 

 nervures dark testaceous ; the enclosed portion of the metathorax 

 longitudinally irregularly sulcate at its base. Abdomen very 

 smooth and shining, beneath it is dark fusco-ferruginous, as well 

 as the legs ; the claws ferruginous. 



Male. — The clypeus and a space on each side not touching 

 the eyes, forming together an oval, bright yellow ; the scape di- 

 lated, triangular ; the flagellum testaceous beneath. Thorax, 

 the anterior tibiae in front and the claws testaceous; otherwise as 

 in the other sex. 

 Hab. Sandwich Islands. 



21. Prosopis flavipes, n. s. B.M. 



Male. Length 2| lines. — Black ; the face yellow, the co- 

 louring is continued upwards on each side nearly to the vertex of 

 the eyes ; the scape cylindrical, black, the rest of the antennae 

 orange-yellow beneath. Thorax, the metathorax has no di- 

 stinctly enclosed space, and is subrugose ; the wings hyaline, the 

 nervures dark fuscous ; all the tibiae and tarsi bright yellow, the 

 former have a ferruginous stain behind. Abdomen smooth and 

 shining, the margins of the segments narrowly rufo -testaceous. 

 Hab. Sandwich Islands. 



22. Prosopis basalis, n. s. B.M. 



Female. Length SJ lines. — Entirely black, the face thickly 

 covered with elongate punctures, and having a longitudinal 

 smooth furrow a Uttle within the orbits of the eyes and termi- 

 nating in a line with their vertex. Thorax finely and veiy 

 closely punctured ; at the sides of the post-scutellum and of the 

 metathorax a little white pubescence ; the claws bright ferru- 

 ginous ; the wings clear hyaline at their base, fuscous towards 

 their apex ; the basal segment of the abdomen very smooth and 

 shining, and having laterally on its apical margin a httle fringe 

 of white pubescence. 



Male. — The face below the insertion of the antennae bright 

 yellow, as is also the frontal half of the scape, which is broadly 

 dilated, heart-shaped, and concave beneath ; the flagellum in- 

 serted exactly in the middle of the scape. Thorax very pu- 



