A REVISION OF THE GENUS PROMYRMECIA EMERY (FORMICIDAE) 101 
greyish, very fine and abundant, particularly on postpetiole and gaster, frequently 
appearing as a greyish covering. 
Head as long as broad, broader in front than behind, occipital border nearly 
straight, angles rounded. Mandibles not as long as head, external border concave 
at middle, inner border nearly straight to basal fifth, thence sharply reduced to 
base, furnished with nine teeth, first two small, third, fifth, seventh and ninth twice 
as large, the ninth forms the angle between the two apparent borders. In some 
examples there is indication of a tooth on basal border but this is usually edentate. 
Frontal carinae short, almost parallel. Clypeus strongly excised in front, inner 
edges straight. Labrum projecting almost to points of clypeus, anterior border 
feebly rounded. Scapes not extending to occipital border; second segment of 
funiculus one-third longer than first and third, fourth to eighth equal, ninth and 
tenth shorter, apical as long as the two preceding combined. Thorax fully two 
and one-half times as long as broad. Pronotum almost twice as broad as long, 
dorsal surface slightly rounded. Mesonotum circular, rounded above. Epinotum 
longer than broad, without a boundary between dorsum and declivity, the latter 
short. Node broader than long, slightly broader behind than in front; in profile 
much higher than long, rounded above, the stalk in front short, not half the length 
of node, anterior face nearly vertical, posterior face sloping behind. Postpetiole 
one and three-fourths times broader than long, much broader behind than in front, 
convex on sides and above. First segment of gaster broader than long. Legs long 
and moderately slender. 
Female, Length 13:5-14-5 mm. 
Differs from the worker only by larger size and in possessing wings. The colour 
appears to be more constant. In all the examples examined the occiput, pronotum, 
margins of the other segments and gaster are blackish; the mesonotum, scutellum, 
epinotum, node and postpetiole red. All the legs are uniformly castaneous, except 
the apical half of posterior femora, these are brown. Front of face bright yellow. 
Four corners of node more clearly defined, but not sharp. Wings hyaline. Ergatoid 
females also are present. 
Male. Length 10-11 mm. 
Black; mandibles, five basal segments of antennae, front of face and all the legs, 
yellow; eight apical segments of antennae brown. 
Head finely striate-rugose on middle, becoming coarser at lateral and occipital 
borders. Mandibles shining, coarsely and sparsely punctate. Pronotum, scutellum, 
mesonotum and epinotum coarsely reticulate-punctate. Node coarsely and irregu- 
larly rugose. Postpetiole and gaster very finely and densely punctate. 
Hair greyish, long and suberect, longer and more abundant on head and thorax 
than on gaster, short and adpressed on legs, none on antennae. Pubescence greyish, 
short, most abundant on gaster. 
Head broader than long, broader in front than behind; occipital border convex. 
Mandibles short, triangular, external border convex; diverging behind. Clypeus 
long, convex and rounded above, concave at middle in front. Antennae long and 
slender; scapes short, first segment of funiculus half as long as scapes, second 
three and one-half times as long as scapes, third slightly shorter than second, the 
others about equal. Thorax barely twice as long as broad. Pronotum strongly 
rounded in front and above. Mesonotum large, convex and rounded above, mayrian 
furrows distinct; a deep longitudinal suture extends from anterior border to near 
base; parapsidal furrows faintly defined. Scutellum broad, strongly convex, 
Epinotum strongly convex and rounded above, without a boundary between the 
dorsum and declivity. Node slightly broader than long, almost circular, strongly 
convex above. Postpetiole broader than long, broadest just behind the middle, 
