HYMENOPTERA. 



151 



•1 ECITON VAGANS. B.M. 



Formica vagans, OUv. Encycl. Meth. vi. 501. 



Eciton vagans, Smith, Trans. Ent. Soc. Loiid. iii. new sev. (worker 



major). 

 Eciton simillina, Smith, Trans. Ent. Soc. Lond. iii. new ser. 



(worker minor). 



Hab. Brazil; Mexico. 



The E. vagans and E. crassicornis have been received from 

 the same locality, and both are entirely of a reddish-brown 

 colour, including the mandibles and legs ; there can be little 

 doubt of their belonging to the same species ; in general form 

 tliey resemble E. hamata, the large worker having similar elon- 

 gated curved mandibles. 



4. Eciton rapax. PI. VI. figs. 6, J. B.M. 



Eciton rapax, Smith, Trans. Ent. Soc. Lond. iii. new ser. 

 Atta quadriglumis, Halid. Trans. Linn. Soc. xiv. 328. 



Hab. Brazil (Para; Santarem ; Ega). 



This species is readily distinguished by its having the head, 

 thorax, legs and nodes of the abdomen opake black, and the 

 abdomen jiale reddish yellow. Mr. Bates says, " This is the 

 largest species of the genus that I have seen ; its columns are 

 narrower than those of the other species, in fact they generally 

 run along in single file, and forage in the same way. I have 

 found them carrying oft' great numbers of cocoons of a species 

 of Formica ; I have searched the columns long and re])eatedly 

 without finding any individuals with large heads and long man- 

 dibles." 



5. Eciton crassicornis. PI. VI. figs. 1, 2, 3, 4. B.M. 



Eciton crassicornis, Smith, Trans. Ent. Soc. Lond. iii. new ser. 



Hab. Brazil (Villa Nova). 



This is a species very easily recognized by its short thick 

 antenuic; the large workers are not furnished with elongated 

 mandibles. 



6. Eciton legionis. B.M. 

 Eciton legionis. Smith, Trans. Ent. Soc. Lond. iii. new ser. 

 Hab. Brazil (Santarem). 



7. Eciton pilosa. B.M. 

 Worker. Length 2f lines. — Brown-black, smooth and shining : 



