168 HYMENOPTERA. 



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

 tennfe, 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 j the entire 

 insect sprinkled with erect black hairs. 



Hab. 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 ocelh large and prominent, the 

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

 beautifully iridescent, the nervm'es 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 5^ lines. — The head, thorax and legs black, 

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

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

 rior tibiffi and tarsi, the intermediate tibiaj 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). 



