DESCRIPTION OF MEXICAN ANTS. 



Eciton Mexicans Roger. 

 EOGER, Berliner entomologische Zeitschrift, 1863, sp. 97. 



Worker major. 

 Length, 0.50 in. 



Worker interme- 

 dia. Length, 0.40 

 in. 



Worker minor. 

 Length, 0.25-0.35 

 in. 



The worker major 

 has long smooth 

 sickle-shaped man- 

 dibles (fig. a) . Man- 

 dibles of the other 

 workers as usual ; 

 their surface smooth, 

 biting edge without 

 teeth. Eyes pearly 

 white, small, angles 

 at back of head, 

 not acute ; spinose 

 projections on each 

 side of metathorax 

 distinct. First node 

 of abdomen nearly 

 as wide as long. 

 Joints of flagellum 

 rather long and slen- 

 der. Head dull, not 

 polished ; color of 

 head in major work- 

 er creamy white ; of 

 abdomen blackish, 

 remainder of body 

 ferruginous ; color 

 of second series fer- 

 ruginous, abdomen Worker minor. 

 black ; of third series, black with the flagellum and tarsi 

 ferruginous. This so closely resembles E. hamataFsib., 

 that it is thought by many to be identical with it. 



