MANN: THE ANTS OF BRAZIL. 415 



34. Pachycondyla crassinoda (Latreille). 

 Taken at Para, Porto Velho, and Madeira-Mamore Camp 39. 



35. Pachycondyla harpax (Fabricius). 



Common at Para Manaos, Porto Velho, Abuna, and Camp 41, 

 INIadeira-Mamore, R. R. 



36. Euponera (Trachymesopus) stigma (Fabricius). 



This species, which is common everywhere in the American tropics 

 is represented in the collection by worker^ and females from Para, 

 Itacoatiara, Manaos, Porto Velho, Abuna, and Camps 39 and 41, 

 Madeira-Mamore R. R. Rotten logs and beneath bark are its 

 favorite nesting places. 



37. Belonopelta jeckylli, sp. nov. 

 Plate 2, fig. 12, 13. 



Worker. (Plate 2, fig. 12, 13). Length 4.5 mm. 



Head very thick dorsoventrally ; excluding mandibles, a little 

 longer than broad, broadest anteriorly, with straight sides, narrowly 

 rounded occipital corners and feebly concave occipital border. Cly- 

 peus convex; at anterior border armed with a stout spine at middle. 

 Mandibles five eighths as long as head, slender, bidentate at apex; 

 the inner border with a large tooth at middle, and a minute one mid- 

 way between this and the subapical tooth. Antennae robust; the 

 scapes slightly arcuate, thickened distally, almost attaining occipital 

 corners. First funicular joint longer than broad, joints 2-10 slightly 

 transverse, those at the apical end subglobose; apical joint as long 

 as the three preceding together, evenly narrowed from base to apex. 

 Eyes minute, situated at anterior third of sides of head. Prothorax 

 with a thick neck. Pronotum from above, excluding the neck, a 

 little broader than long, rounded in front and at sides, the. posterior 

 border concave. Promesonotal suture very strongly impressed. 

 Mesonotum about half the width of pronotum, rounded in front, 

 sides nearly straight, in profile slightly convex. Mesoepinotal suture 

 feebly impressed. Epinotum twice as long as the mesonotum, and a 



