186 HYMENOPTERA. 



species; the neuration of the wings of aspersa is somewhat 

 diiferent to the typical form of (E. cephalotes, and it might be 

 desirable to form a subgenus for its reception ; for the present, 

 we retain them as a section only. 



11. (ECODOMA CORONATA. B.M. 



Formica coronata, Fabr. Syst. Piez. p. 413. 70 ? . 



Hab. Brazil; Rio (Petropolis). (Coll. Rev. Hamlet Clark.) 



12. (ECODOMA NIGRA. B.M. 



Female. Length 6 lines. Black : the mandibles ferruginous, 

 longitudinally striated, and having two blunt teeth at their apex, 

 their base, outer margins and apex black; two longitudinal 

 carinae on the front, which run irregularly and obliquely to the 

 lateral posterior angles of the head, each carina is elevated into a 

 spine or tooth opposite the eyes; the head is longitudinally 

 strigose, and has a number of short spines at the posterior 

 angles. Thorax : a short curved spine on each side in front, and 

 two rather longer curved ones on the metathorax ; the meso- 

 thorax and scutellum longitudinally covered with a series of 

 irregular carinse; the legs covered with short brown pubescence, 

 the tarsi obscurely ferruginous. Abdomen globose, covered with 

 irregular points and tubercles; the first node of the peduncle 

 quadrate, and having a number of short points or tubercles ; the 

 second node transverse,, and similarly tuberculate. 



Hab. Brazil; Rio (Tejuca). (Coll. Rev. Hamlet Clark.) 



13. (ECODOMA HYSTRIX. PL X. fig. 18. B.M. 



Formica hystrix, Latr. Hist. Nat. Fourm. 229 $ . 



Fdbr. Syst. Piez. 414. 75 ? . 

 Atta hystrix, Halid. Trans. Linn. Soc. xvii. p. 328 (1837). 



Hab. South America; Brazil (Para). (Coll. H. W. Bates.) 



Of this species Mr. Bates remarks " This is a distinct species, 

 offering precise characters in the thoracic spines, &c. I found a 

 vast number on one occasion in a low meadow, carrying away 

 fragments of fallen fruit ; the whole were nearly of uniform size ; 

 I found none of the large-headed individuals." 



14. (ECODOMA RUGOSA. B.M. 



Female. Length 3i lines. Pale red : the head roughened, 

 with several short spines on the lateral margins of the vertex, 

 two irregular ridges running backwards from the insertion of the 

 antennae, with irregular elevations or points between ; the ocelli 



