158 HYMENOPTERA. 



posterior tibiae, the mandibles and base of the scape of the an- 

 tennae, dark rufo-piceous. The head densely covered with pale 

 golden pubescence, and very broad, much wider than the thorax ; 

 the eyes very large and ovate ; the thorax flattened above, the 

 lateral margins acute, the disk longitudinally aciculate ; the nodes 

 of the petiole and the abdomen smooth and shining ; the entire 

 insect sprinkled with erect black hairs. 



Hob. Brazil (Ega). 



18. PSEUDOMYRMA VIDUA. PL XIII. fig. 13. 



Male. Length 3 lines. Rufo-testaceous : the apex of the ab- 

 domen fuscous ; the face, antennae and legs paler than the tho- 

 rax or abdomen ; the eyes and ocelli large and prominent, the 

 former black, the latter of a glassy brightness ; wings hyaline and 

 beautifully iridescent, the nervures testaceous. 



Hab, Brazil (Ega). 



19. PSEUDOMYRMA LIGNISECA. 



Female. Length 3 lines. Reddish-yellow : eyes very large, 

 ovate and black ; the teeth of the mandibles blackish ; the head 

 anteriorly, the antennae and legs, pale rufo-testaceous ; the pro- 

 thorax with the lateral margins acute and slightly raised; the 

 first node of the petiole clavate and compressed, with a deep 

 longitudinal groove above, the lateral margins forming elevated 

 carinae which are prolonged at the apex, forming two blunt teeth ; 

 the second node globose; the first segment of the abdomen with 

 a slight stain on each side at the base, and the two following 

 segments also slightly stained, their apical margins pale. 



Hab. Brazil (Ega). 



20. PSEUDOMYRMA VENUSTA. 



Female. Length 5J lines. The head, thorax and legs black, 

 the abdomen ferruginous ; the scape in front, the apex of the an- 

 tennae, the anterior margin of the face, the mandibles, the ante- 

 rior tibiae and tarsi, the intermediate tibiae in front, as well as the 

 apex of the femora in front, rufo-testaceous ; the articulations of 

 the legs pale ; the head and thorax covered with a fine silky pile ; 

 the first node of the petiole subglobose, the second node rounded 

 and narrowed to its base ; the abdomen covered with a pale golden 

 pile, bright and glittering in certain lights. 



Hab. Brazil (Ega). 



