164 Mr. Smith's Descriptions 



Worker (minor). — 2g lines. Closely resembles the preceding, 

 but having the legs proportionably more slender and longer; the 

 head is narrower. 



This species is from Villa Nova, Brazil ; its short legs and 

 thickened antennae readily distinguishing it. 



Sp. 6. Eciton smUlhna, n. s. 



Worker. — Length 2 lines. Reddish yellow ; the antennae short 

 and clavate ; head elongate, emarginate behind, the lateral angles 

 acute : the metathorax having two longitudinal carinas, not pro- 

 duced at their apex ; legs shorter than in any of the other species, 

 except E. crassicornis, the first node of the abdomen having 

 a minute acute spine beneath, at its base ; the second also having 

 a very minute tooth, or spine, directed forwards : the entire insect 

 very thinly sprinkled with pale glittering hairs. 



This species approaches nearest to E. crassicornis ; but its fla- 

 gellum is much more slender at the base, the head is more elongate, 

 and the metathorax differently formed. Sent from Para, by Mr. 

 I J. W. Bates. 



Sp. 7. Eciton legionis, n. s. 



Worker. — Length 3 lines. Reddish yellow and shining ; an- 

 tennae the length of the head and thorax, inserted in a large 

 cavity in front of the head ; the margins of the cavity raised 

 in front, curving inwards round each scapus and passing upwards 

 to the edge of the cavity : the head elongate ovate, slightly 

 emarginate behind, the angles not produced ; the eyes very 

 minute. Thorax narrower than the head, compressed at the 

 sides, and rugose above ; the metathorax without carinas or spines; 

 the nodes of the abdomen unarmed beneath : abdomen ovate, very 

 smooth and shining. 



Worker (minor). — 2 lines. Excepting in size I can detect no 

 very distinctive difference from the large worker. 



Of this species Mr. Bates observes, " I have only found it in 

 open sandy and grassy campos ; it shows the same irritability and 

 hurried movement as the other sjiecies ; is very quick to break line, 

 and to attack furiously, any intruding obstacle. In a procession 

 which I observed there were no individuals with the largely de- 

 veloped mandibles, as in other species. The locality in which I ob- 

 served it being an open district, it afforded me an opportunity of 

 observing some parts of its habits, and the business which occupies 



