1912] Cockerell — Neic Bees from Brazil 49 



gined with yellow; pubescence light fulvous; mandibles light yellow, black at tip, 

 with a strong tooth at inner corner; malar space narrow but distinct; clypeus, 

 except a pair of subobsolete reddish bars, elongate supraclypeal mark (its upper part 

 reddish), and broad lateral face-marks, all pale yellow, the lateral marks filling space 

 between clypeus and antennae and eyes, ending squarely a little above level of 

 antennae; front and mesothorax pruinose with fine yellowish-gray hair; scape pale 

 yellow- testaceous, black above at apex; flagellum dark above and ferruginous be- 

 neath, last joint red also above; prothorax yellow; narrow lateral margins of meso- 

 thorax yellow, and anterior margin broadly subtestaceous, except a central portion, 

 which is dark; tegulae rufo-fulvous; wings very long, suffused with orange, except 

 the broad apical field, which is grayish; nervures ferruginous; legs bright ferrugi- 

 nous, with ferruginous hair, but the broadly expanded apical part of hind tibiae 

 piceous, the hind basitarsi black, and the small joints of hind tarsi dark red; 

 abdomen of the long and narrow type, shining, with scanty red hair. 



Hah. — Porto Velho, Rio Madeira, Brazil, two, one the type 

 {Mann & Baker). Also one from Abuna, Rio Madeira {Mann & 

 Baker). Related to T. clavipes (Fabr.), which it resembles a good 

 deal in the markings of the head and thorax, but much larger, 

 with longer wings, the scutellum wholly light, etc. It is one of 

 the species placed in the subgenus Tetragona. 



Trigona rhodoptera sp. nov 



Worker. Length about 7| mm., the very ample wings a little over 8; head black, 

 with the clypeus, supraclypeal area, and more than lower half of cheeks (except a 

 band along orbits) ferruginous; hair of vertex and front dark fuscous; sides of face 

 pale grayish pollinose; cheeks densely covered with a short pale yellowish tomen- 

 tum; eyes ferruginous; mandibles quinquedentate, dark reddish, blackish apically; 

 malar space quite distinct; scape ferruginous, black above at apex; flagellum clear 

 ferruginous beneath, black above, except at apex; thorax entirely bright ferrugi- 

 nous red, with hair of the same color; tegulae red; wings very red, orange-fulvous, 

 nervures clear red; legs red, with the greatly broadened hind tibiae more or less 

 infuscated, having especially a black patch covering the inner half (on both sides 

 of the tibia) apically; middle and hind tarsi infuscated; long hair on margin of 

 hind tibiae sooty; abdomen short, very shiny, dark fuscous with the base pale 

 rufotestaceous. 



Hab.— Type from Abuna, Rio Madeira, Brazil {Mann & Baker). 

 Also one from Madeira-Mamore R. R. Co. Camp 41, Rio Madeira, 

 Brazil {Mann & Baker). Superficially not unlike T. manni, but 

 entirely different in the markings of head and thorax and charac- 

 ter of the mandibles. T. pallida Latr., also collected at Abuna, is 

 much smaller, with differently colored wings. T. williana Friese 

 must be a similar insect, but it has ferruginous hairs on the hind 



