46 EDWARD NORTON. 



h. Back of head slightly eraarginate, without spines or angulate eoriu-r-. 

 No. 4. Eciton tepeguas, n. sp. Species nigra. 



Worker major. — Length 0.40 inch. Deep black, shining, the flagellnni, sides 

 and apex of metathorax and legs below knees, ferruginous; antennse as usual. 

 Head large, slightly eraarginate behind, not angulate, but somewhat rounded, 

 and lobed at sides ; mandibles rugose, running into longitudinal striee, the inner 

 edge with two large inner teeth, and with small pits along the inner edge. An- 

 tennse inserted as in E. legionis, viz., the margin of a cavity raised about eaeli 

 at the front and sides and a deep channel down the middle of face. Eyes very 

 small. Head and whole body shining, delicately reticulate and with larger 

 scattered subobsolete pits. Parts of thorax distinct, with no acute angles. 

 First node longer than second, compressed, second nobe widest, glol)Ose, both 

 truncate behind, with no spine beneath, but a short tooth extending forward 

 from apex of second. Abdomen covered with fine short pale hair, the whole 

 body with longer reddish hair; edge of each segment of abdomen golden. 

 The tijjs of hinder femora as long as the ape.x of abdomen. 



No. 69. Eciton tepeguas. Var. ferruginea. 



Worker major. — Color almost wholly ferruginous, abdomen blackish, surface 

 dull, only the abdomen shining. 

 Probably a variety of No. 4. 



No. 52. Eciton clavicornis, n. sp. 



Only the Worker minor. Length 0.18 inch. Polished and shining, (""-dor 

 piceous-black, the flagellum and legs below the knees pale brown. Antenuie 

 short, as in E. crassicornis, the scape hardly clavate, the flagellum quite so. 

 apex of scape and the flagellum, nasus and mandibles yellow-red. Mandibles 

 with longitudinal strise arising from little punctures along the inner edge. 

 Cutting edge falcate, smooth. Basin of antennse large and deep. Eyes min- 

 ute. Head eraarginate behind, the angles distinct, not acute (about 90 degrees, i 

 Nodes nearly equal; the first with a long spine at base beneath curving back- 

 ward, the second with a tooth extending forward. Apex of metathorax and 

 nodes beneath rufous, legs rather short, below the tips of knees yellow-rufcnis. 

 Claws slender, their inner tooth sraall, near the base. 



This is much like E. slmiUima Smith, but differs in form of meta- 

 thorax, &c. 



No. 77 appears to be a species of Myrmica. 



