230 HYMENOPTERA. 



the antennae yellow, five or six of the apical joints black or fus- 

 cous ; the mandibles ferruginous. Thorax : the collar, tegulae, 

 a stripe beneath the wings, the scutellum, post-scutellum, apex 

 of the metathorax and the legs yellow; the scutellum and post- 

 scutellum longitudinally striated ; the metathorax with a central 

 longitudinal depression, obliquely striated; the anterior and inter- 

 mediate coxae and trochanters, the posterior coxae at their base, 

 and the apical half of the posterior femora, black ; the extreme 

 base of the posterior tibiae, their apex, and also the apical joint 

 of the posterior tarsi, black ; the wings hyaline, the nervures pale 

 ferruginous. Abdomen : the petiole, the first segment, the fourth 

 segment more or less, and the fifth and sixth entirely yellow. 



Male. Length 9 lines. — Difi'ers only in having the yellow parts 

 paler and brighter. 



Hab. Australia (Port Essington ; Macintyre River ; Swan River) ; 

 Ceram. 



Specimens received from Swan River have the yellow spots on 

 the scutellum and metathorax nearly or quite obsolete. 



14. Pelopceus formosus. B.M. 



Female. Length 8^ lines. — Black : the clypeus, scape, and 

 four basal joints of the flagellum yellow : the latter are black at 

 the sides; the mandibles ferruginous; the face clothed with 

 golden pile. Thorax : the collar, tegulae, a stripe beneath the 

 wings, the scutellum, a spot on each side of the metathorax at its 

 base, a larger one at its apex, and two oblong approximate spots 

 in the middle, yellow ; the meso- and metathorax transversely 

 striated ; the legs yellow ; the coxae black, the intermediate and 

 posterior pairs spotted with yellow ; the trochanters black, the 

 intermediate and posterior pairs yellow at their apex ; the ex- 

 treme base of the anterior and intermediate femora, the posterior 

 pair, except their base and apex, black ; wings hyaline, the an- 

 terior pair fuscous at their tips, the nervures ferruginous. Ab- 

 domen : the petiole, the first segment, the fourth more or less, 

 and the fifth and sixth entirely yellow. 



Hab. Australia. 



15. Pelopceus Bengalensis. B.M. 



Chalybion Bengalensis, Dahlb. Hym. Europ. i. 433. 2. 

 Pelopceus violaceus, St. Farg. Hym. iii. 321. 22. 

 Chalybion pruinosus, Dahlb. Hym. Europ. i. 433 (var.). 



Hab. India (Madras, Bengal) ; Philippine Islands ; China ; Isle 

 of France. 



