HYMENOPTERA. 19/ 



subpetiolate, its pubescence black ; the fourth segment beneath 

 having a floccus of long thin curled black hair. 



Hab. Demerara. 



31. Pepsis limbata. 



Pepsis limbata, Guer. Voy. Coq. Zool ii. pt. 2. p. 225 ; Atlas, 

 Diet. Hist. Nat. t. 471. f. 2. 

 Spin. Gay's Chili, vi. 373. 1. 



Hab. Chili and Peru. 



32. Pepsis Petitii. 



Pepsis Petitii, Guer. Voy. Coq. Zool. ii. pt. 2. 255. $ . t. 115. f. 1. 

 Hab. Peru. 



33. Pepsis sumptuosa. 



Female. Length 15 Unes. — Black : the face as high as the 

 anterior stemma densely covered with golden pile ; the antennae 

 orange-yellovk^, the first, second, and basal half of the third joint, 

 black ; the pubescence on the thorax black ; an oblong shape on 

 the disk, the sides of the scutellum, the post-scutellum, meta- 

 thorax, sides of the thorax, and the coxae more or less, adorned 

 with rich golden pile ; wings dark fusco-ferruginous, the second 

 discoidal cell having a small hyaline spot at the base. Abdo- 

 men having a changeable violet iridescent pile, the pubescence 

 at the apex black. 

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



34. Pepsis vitripennis. 



Female. Length 1 inch 5-7 hues.— Black, adorned with a 

 changeable blue pilosity ; the antennae beneath obscurely yellow 

 towards their apex ; the thorax black above, with faint reflections 

 of blue in certain lights ; the metathorax transversely strigose, 

 its posterior margin raised, and the lateral angles subacute and 

 produced; wings splendidly iridescent, partaking of brilliant 

 tints of violet, blue and green efi'ulgence ; the legs partake of 

 the same colouring, but less vivid in certain Hghts. Abdomen 

 adorned with a changeable blue iridescence. 



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



35. Pepsis gracilis. B.M. 

 Pepsis gracihs, St. Farg. Hym. iii. 474. 8. 



Hab. Cayenne. 



