1930 ] 
Tivo New Genera of Ants 
45 
tire posterior border. Eyes moderately large and convex, 
placed a little in front of the middle of the sides of the 
head. Surface of clypeus rather flat, slightly projecting 
but scarcely subcarinate in the middle, the anterior border 
transverse, feebly sinuate on each side. Mandibles with 
nearly straight external and somewhat oblique apical bor- 
Fig. 2. Aphantolepis quadricolor gen. et sp. nov. a, Worker, in 
profile; b, petiole and anterior portion of first gastric segment, dorsal 
view. 
ders, the latter with seven small, acute teeth, which are 
somewhat crowded and subequal, except the basal and third 
tooth from the apex, which are smaller. Antennal scapes 
extending nearly one-third their length beyond the posterior 
border of the head; first funicular joint twice as long as 
broad, nearly as long as the two succeeding joints together; 
joints 2-10 only slightly longer than broad, the terminal 
joint as long as the two penultimate joints together. Pro- 
