412 HYMENOPTERA. 



line on each side of the face touching the eyes, and a minute 

 spot between the antennae yellow, the labrum and mandibles 

 ferruginovis ; the flagellum fulvous beneath ; wings subhyaline, 

 having a fulvous tint towards the base, the nervures testaceous, 

 the stigma yellow; the legs dark rufo-testaceous. Abdomen 

 ferruginous, the margins of the segments having a black band. 



Hab. Columbia. 



28. Trigona basalis. B.M. 



Worker. Length 3 lines. — The head, thorax, legs, antennae 

 and basal segment of the abdomen black, the rest of the abdomen 

 ferruginous ; the flagellum ferruginous in front, as well as the 

 extreme base of the scape and mandibles, a perpendicular line 

 on the clypeus, and an angular spot on the sides of the face, 

 the tarsi and posterior tibiae testaceous ; sometimes the entire 

 legs rufo-testaceous ; the wings hyaline and iridescent, the ner- 

 vures pale testaceous. 



Hab. Brazil; Columbia. 



29. Trigona D'Orbignyi. 



Trigona D'Orbignyi, Guer. Icon. Reg. Anim. Ins. p. 463. 

 Hab. Bohvia. 



30. Trigona argentata. . B.M. 



Melipona argentata, St. Farg. Hym. i. 428. 22 {type sp. in Coll. 

 Westw.). 



Hab. S. America. 



31. Trigona sexpunctata. 



Mehpona sexpunctata, St. Farg. Hym. i. 431. 29. 

 Hab. ? 



32. Trigona scutellata. B.M. 

 Melipona scutellata, St. Farg. Hym. i. 426. 1/. 



Hab. South America. 



33. Trigona minuta, 



Melipona minuta, St. Farg. Hym. i. 427. 19. 

 Hab. ? 



