1930 ] 
Notes on Euponera gilva 
75 
convex. Apex of the mandible with a long, stout, sharp 
tooth, which is longer than any of the other teeth on the 
masticatory margin, the first three of these large and rather 
blunt, the innermost three smaller and set very close to- 
gether. Clypeus with a well-marked, steeply declivious and 
acutely triangular median lobe, the apex of which lies be- 
tween the anterior ends of the frontal lobes. Anterior bor- 
der of the clypeus feebly convex with sinuate lateral termi- 
nations. Eyes oval, moderately large, their anterior border 
separated from the insertion of the mandible by a distance 
less than the thickness of the antennal scape at its apex. 
Ocelli of moderate size, equidistant from each other. Frontal 
lobes flattened, together forming a subcordiform plate 
which is divided by a longitudinal impression that is con- 
tinuous with the frontal groove, the latter extending back 
to the median ocellus. Antennae twelve- jointed, the funicu- 
lus twice as long as the scape. The scape in repose fails 
to reach the occipital border by a distance one and one-half 
times its greatest thickness. First funicular joint some- 
what longer than the following two together; joints two 
to seven all broader than long; joint eight as broad as long; 
joints nine and ten slightly longer than broad; terminal 
joint slightly longer than the two preceding joints together. 
Thorax narrow, its maximum width one-half its length. 
The dorsum of the thorax in profile feebly convex. Pro- 
notum with a short and very declivious anterior face 
descending to the neck. Seen from above the humeral 
angles are much rounded, which with the strongly concave 
posterior border, gives the pronotum a crescentric appear- 
ance. Scutum sub-trapezoidal, one-sixth broader than long, 
the anterior border strongly convex. Notauli (Mayrian 
furrows) absent, parapsidal furrows present, extending 
two-thirds of the distance to the anterior margin of the 
scutum. Scutellum small, suboval in outline, scarcely half 
as wide as the greatest width of the thorax. Metanotum 
very narrow, arcuate in shape. Epinotum seen from above 
rectangular, the dorsum one-fourth wider than long. In 
profile the basal face is considerably shorter than the 
declivious, which it meets at a sharp angle. Petiole very 
similar to that of the worker, the anterior face steeply slop- 
ing, the anterior face virtually perpendicular, the summit 
