200 HYMENOPTERA. 



sion, and on each side at the base and apex an obtuse tubercle ; 

 wings of a reddish-yellow, having a broad fuscous stain at the 

 base, the apical margins having a paler cloud at their apex, not 

 extending to the third submarginal cell in width. Abdomen of 

 a splendid blue, the pubescence at the apex black. 



Male. Length 12 lines. In colour closely resembling the 

 female, but the abdomen is bright violet, and the wings are 

 paler ; the fourth segment of the abdomen, beneath, has on each 

 side a floccus of long curled hair. 



Hab. Mexico; Columbia. (Coll. W.W. Saunders, Esq.) 



50. PEPSIS PRISMATTCA. B.M. 



Male. Length 10 lines. Black : antennae of an orange-red, 

 having three or four of the basal and apical joints of the antennae 

 fuscous ; the labrum, mandibles and palpi nigro-piceous ; the 

 entire insect exhibiting in different lights beautiful prismatic 

 colours, of blue, purple and violet ; wings nearly black, with a 

 slight blue and green iridescence ; metathorax transversely stri- 

 gose ; abdomen subpetiolate. 



Hab. Mexico. 



51. PEPSIS DISELENE. 



Male. Length 12 lines. Black : the pubescence black, the 

 extreme apex of the flagellum yellow ; wings dark fuscous ; a 

 large subovate silvery spot on the anterior wings a little beyond 

 the middle, the spot formed of very short fine silvery pubescence ; 

 a subhyaline spot at the base of the second discoidal cell ; the 

 metathorax thinly covered with long black pubescence, trans- 

 versely strigose, the posterior lateral angles produced. Abdomen 

 subopake, slightly shining at the base. 



Hab. India (Singapore). (Coll. W. W. Saunders, Esq.) 



52. PEPSIS RUFIPES. 



Pepsis rufipes?, St. Farg. Hym. iii. 472. 5. 

 Hab. Cape of Good Hope. 



53. PEPSIS RUFICEPS. 



Pepsis ruficeps, St. Farg. Hym. iii. 489. 34 ?. 

 Hab. Cape of Good Hop 



