28 



HYMENOPTERA. 



bright yellow ; the labrum and scape in front yellow ; the man- 

 dibles ferruginous; antennae fulvous. Thorax, the collar on 

 each side, the tubercles and a patch behind uniting, the tegulae 

 in front, the scutellum and post-scutellum, the anterior femora 

 at their base beneath the tibiae and tarsi, yellow ; the tibiae have 

 a ferruginous stain behind ; the intermediate and posterior tarsi 

 ferruginous ; the scutellum is sculptured with large shallow punc- 

 tures. Abdomen purple or deep blue, closely and finely punc- 

 tured ; the margins of the segments sometimes rufo-piceous, as 

 well as the abdomen beneath. 

 Hob. Adelaide. (Coll. J. S. Baly, Esq.) 



38. PROSOPIS QUADRATA, n. s. 



Male. Length 3 lines. Black, face below the antennae 

 yellow, the antennae luteous beneath. Thorax as well as the 

 head very closely and finely punctured ; the tubercles, scutellum 

 and post-scutellum forming a quadrate patch, yellow; below 

 which is an enclosed space, beautifully and delicately reticulated ; 

 wings hyaline, splendidly iridescent; the anterior and interme- 

 diate tibia in front, as well as the tarsi of the former, pale fer- 

 ruginous. Abdomen elongate-ovate, closely punctured ; the 

 margins of the two basal segments constricted. 

 Hab. New Holland. (Coll. J. S. Baly, Esq.) 



39. PROSOPIS BIDENTATA, n. s. 



Male. Length 3i lines. Black, face below the insertion of 

 the antennae, and a narrow line between not reaching the anterior 

 stemma, a line along the margin of the eyes, as well as a line 

 behind them, yellow. Thorax opake ; the collar, tubercles, the 

 knees of the anterior and intermediate legs, as well as the basal 

 half of the posterior tibia, pale yellow ; anterior tibiae and basal 

 joint of the tarsi ferruginous; wings hyaline, the two recurrent 

 nervures uniting with the nervures of the second submarginal 

 cell. Abdomen punctate, shining ; beneath, the third segment 

 is produced into a transverse elevated ridge, having a stout tooth 

 at each extremity. 

 Hab. New Holland. (Coll. J. S. Baly, Esq.) 



40. PROSOPIS ELEGANS, n. s. B.M. 



Female. Length 3^ lines. Head and thorax black ; the face 

 with three broad yellow stripes, terminating in a line with the 

 anterior stemma ; the labrum yellow, the mandibles ferruginous ; 

 antennae fusco-ferruginous above, pale beneath, their scape yel- 

 low in front. Thorax closely punctured, the soutellum and post- 



