hymenoptera. 289 



1. Osiris pallidus. 



Male. Length 5 lines. — Pale testaceous, apex of the man- 

 dibles, eyes and flagellum fusco-ferniginous, the apical joint of 

 the latter and towards its base beneath, ferniginous. The collar 

 bilobate, the disk of the thorax fuscous, and having a central 

 oblong-ovate pale testaceous macula; down the middle of the 

 disk a slightly elevated carina, the scutellum transverse, somewhat 

 rounded and elevated; the metathorax and femora within are 

 pale yellow-testaceous ; wings flavo-hyaline, the costal nervure 

 fuscous, the stigma and the nervures towards the apex of the 

 wing pale ferruginous, towards the base of the wing the nervures 

 are darker. Abdomen elongate, pale rufo-testaceous, the apical 

 margins of the segments shghtly fuscous in the middle. 



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



2. Osiris variegatus. 



Male. Length 5 lines. — Head and thorax yellow-testaceous 

 varied with fuscous; the antennae, face, leaving the orbits of 

 the eyes yellow, and the base of the clyjjeus fusco-testaceous ; 

 an elevation between the antenme yellow; the margin of the 

 vei-tex fuscous, as well as the space behind the ocelli ; between 

 the ocelli and the eyes the vertex is yellow. The disk of the 

 thorax, the posterior margin of the scutellum and the metathorax 

 on each side, the trochanters and femora beneath, as well as an 

 obUque line beneath the wings, fusco-testaceous; wings yel- 

 lowish hyaline, stigma and nervm'es towards the apex testaceous, 

 those towards the base of the wings darker. Abdomen elongate, 

 fuscous, the basal margins of all the segments above and beneath 

 yellow-testaceous. 



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



Genus 42, CHRYSANTHEDA. 



Apis, pt., Linn. Syst. Nat. i. 953. 

 Chrysantheda, Perty, Del. An. Art. p. 148. 

 Euglossa, pt., Guer. Icon. Reg. Anim. Ins. p. 457. 



I. Chrysantheda dentata, B.M. 



Apis dentata, Linn. Syst. Nat. i. 954, 14, 



Fabr. Ent. Syst. ii. 339. 108. 

 Euglossa dentata, Fahr. Syst. Piez. p. 363. 2. 



Latr. Gen. Cr. Ins. iv. 180. 



Gu&. Icon. Reg. Anim. Ins. p. 45/. t. 75. f. 2. 



Sulz. Gesch. Ins. t. 27. f. 16. 

 Hab. Brazil; Columbia; Demerara. 



