1922] 
Conoaxima 
155 
nest of Azteca. Without doubt, the Central American species 
is also a parasite of these ants. 
The two species may be distinguished as follows: 
Frontal projections spiniform, acute, much longer than broad 
at base; median projection of pronotum acute; scape of 
antennse black or piceous; C. aztecidida sp. nov. 
Frontal projections triangular, as high as broad at base; median 
projection of pronotum rounded; scape of antennae more or 
less ferruginous, especially toward base . .C. affinis sp. nov. 
Conoaxima aztecicida sp. nov. 
9. Length 4.2 mm. Black; abdomen obscurety stained 
with rufous at the sides of the sixth and base of the seventh 
segment; antennal scape entirely, pedicel, except above; knees, 
tibiae and tarsi of front legs; knees and apices of tibiae of four 
posterior legs, yellow; middle and hind tarsi, except tips, white. 
Body clothed with white, bristly hairs, one arising from 
each puncture on the thoracic nota, with a denser patch on the 
metanotum and hind coxa below; tip of abdomen also white 
haired; legs clothed with white hairs which form quite a distinct 
fringe on the hind femora beneath. Head closely and densely 
punctate, each puncture about half as wide as the diameter of 
the scape and almost everywhere so close together that the 
space between them forms an irregularly hexagonal reticulum. 
Lateral ocelli much closer to the eye than to the median ocellus, 
the lateral ones oval, separated by their own width from the 
eye; frontal spine just in front and slightly toward the median 
line from the lateral ocellus; head seen from above two and one 
half times as broad as thick, with the eyes extending almost to 
the front and to the temples. Antennal scape extending to the 
median ocellus, less than half as long as the flagellum; pedicel 
narrower than, and only half as long as the first funicular joint; 
one ring-joint; the five funicle joints growing thicker and 
slightly shorter, first one oval, twice as long as thick, fifth but 
little longer than thick; club composed of three distinct joints, 
as long as the two preceding funicular joints together, entire 
