478 bulletin: museum of comparative zoology. 



and sharply truncate posterior border. Eyes small, slightly convex. 

 Mandibles small, short, with four coarse teeth. Clypeus about as 

 broad as long, carinate, the anterior border broadly concave. Frontal 

 area distinct. Frontal carinae more approximate in front than behind. 

 Antennae short and slender, the scapes curved, extending one eighth 

 their length past the occipital corners; funicular joints 1-3 subequal, 

 more than three times as long as broad, joints 4-6 subequal, slightly 

 shorter, than the first three, the rest of the joints still shorter and sub- 

 equal in length. Pronotum one half as broad as the head, the anterior 

 border and the front of sides with a rounded carina. Meso- and 

 epinotum in profile evenly arched above; from above, rounded at 

 sides. Petiolar node in profile about as thick as long, moderately con- 

 vex in front, nearly straight behind; from above as broad as long, 

 evenly rounded in front and behind. Legs very long, the tibiae and 

 metatarsi broad and very much depressed. 



Sublucid throughout, the whole body finely shagreened, more 

 coarsely on the head; with a covering of silky, recumbent pubescence, 

 which is less abundant on the head, pro- and mesonotum, and the 

 petiolar node; with long, stiff, erect hairs on the head, thorax, 

 gaster, and legs; the head in addition bears shorter, subei-ect hairs. 



Body and legs black, the gaster on account of the dense, silky 

 pubescence has a yellow sheen ; head reddish brown, the antennal 

 scapes black. Pubescence and short fine pile yellow; coarse hairs 

 black. 



Worker minor (Plate 6, fig. 49, 51). Length 9 mm. 



Head a little longer than broad, narrowed in front, the sides nearly 

 straight; occipital corners broadly rounded; posterior border straight. 

 Clypeus with straight, projecting anterior border. Antennae long, 

 the scapes extending three fourths their length past the occipital 

 corners of the head. Thorax and petiole similar to that of worker 

 major. Legs as in worker major. 



Sculpture, color, pile, and pubescence as in worker major, but the 

 pubescence of the gaster is somewhat finer. 



Described from a small series which was collected at Madeira- 

 Mamore Camp 41. The ants were nesting in a hollow palm tree and 

 it was necessary to smoke them out. Their movements in life were 

 very active. 



The peculiar shape of the thorax, the strongly flattened long legs 

 and the color are very distinctive. 



