HYMENOPTERA. 157 



and thick, with a minute acute tooth at the base beneath, the 

 sides of the node flattened ; the second node much wider and sub- 

 globose. 

 Hab. Rio (Constantia). (Coll. Rev. Hamlet Clark.) 



This species resembles P. sericata, but in that species the pe- 

 tiole is longer and very slender, and not toothed beneath. 



14. PSEUDOMYRMA EJECTA. 



Worker. Length 1-J- line. Rufo-testaceous, smooth and 

 shining : the head, hinder part of the thorax, femora and tibiae, 

 darker-coloured ; abdomen blackish-brown ; the thorax stran- 

 gulated in the middle, the first node of the petiole subelongate, 

 a minute tooth at the base of the petiole beneath, both the nodes 

 rufo-testaceous ; the tarsi pale testaceous. 



Hab. ? 



The habitat is probably Brazil ; it is the smallest species of the 

 genus known. 



15. PSEUDOMYRMA FLAVIDULA. 



Worker. Length 2| lines. Entirely smooth and shining 

 yellow : the eyes and tips of the mandibles black ; the head 

 broader than in P. pallida, which it much resembles ; a very 

 faintly impressed line runs from the anterior stemma to the cly- 

 peus, which has a deeper impressed pit in the middle. Thorax 

 strangulated in the middle. Abdomen covered with a fine silky 

 pile ; more or less fuscous at the apex, and with a fuscous spot, 

 more or less distinct, on each side at the base. 



Hab. Brazil (Santarem). 



16. PSEUDOMYRMA FABEK. PL XIII. fig. 1 1. 



Worker. Length 3 lines. The head and thorax dark black- 

 ish-brown, the coxse and femora dark rufo-piceous, the antennae, 

 tibiae and tarsi rufo-testaceous ; the mandibles, anterior margin 

 of the face and the abdomen, pale testaceous, entirely smooth and 

 shining ; the first node of the petiole slender and clavate, the 

 second subclavate and more ovate. 



Hab. Brazil (Ega). 



17. PSEUDOMYRMA CLADOICA. PL XIII. fig. 12. 



Worker. Length 4 lines. Head black ; the thorax, legs and 

 abdomen reddish-yellow; the tarsi, and the intermediate and 



