tf NORTON, 



workers, the striae finer and remaining segments delicately 

 punctured. The whole body more or less sericeous with 

 fine whitish hair. Wings as in E. tuberculata. Claws 

 bifid. (Four workers, one male.) 



Eciton brunnea Norton (nov. sp.). 



Worker minor. Length, 0.37 in. Color of head and 

 thorax black, metathorax indistinctly ferruginous. Abdo- 

 men and legs from honey-yellow to ferruginous. Head 

 narrower and mandibles broader than in E. Mexicana. 

 Eyes rather larger. Basin of antennae surrounded by a 

 carinae, except on upper side ; an impressed line down the 

 face. Mandibles with a distinct inner tooth, and their 

 basal half finely denticulate. Head narrowed behind, 

 with a short bent spine on back of the hinder angles. A 

 distinct flattened space with subangulate margin down the 

 thorax, ending in middle of metathorax in two spines ; a 

 single sharp spine beneath first node bent backwards, and 

 a tooth on apex of second node beneath pointing forward. 

 Abdomen ovate, wholly yellow-red. The whole insect 

 sprinkled with pale hair. Claws with a single inner tooth 

 near the middle. (Five specimens.) 



This is more like E. rapax Smith, than any other spe- 

 cies known to me. 



* 



Eciton Sumichrastii Norton (nov. sp.). 

 Worker minor. Length, 0.15-17 in. Black ; antennae, 

 abdomen, and legs, reddish piceous. Head one-half 

 wider than thorax, somewhat contracted behind, deeply 

 emarginated, with sharp slightly recurved angles. An- 

 tennae somewhat clavate. Mandibles short and stout ; 

 eyes minute. The whole head and thorax 

 covered with large deep pits, rather con- 

 fluent longitudinally upon the last. Su- 

 tures between parts of thorax distinct. 

 Nodes of peduncle of equal size, the first 

 coarsely punctured ; no spines beneath ; 

 abdomen shining, polished. The whole 

 body sprinkled with pale hair, most abun- 

 dant on abdomen. All the tibial spines 

 pectinate. Claws simple. (Seven specimens.) 



