1979] 
Brown — New Species of Proceratium 
341 
Head, trunk, petiole and postpetiole densely and moderately coar¬ 
sely sculptured, opaque generally, but with minor glancing reflec¬ 
tions here and there from individual rugulae or the bottoms of 
punctures. On the head, the sculpture is finest and most shallow, with 
rugulosity running in the directions shown in fig. 2, and more or less 
longitudinally on the sides of the head. Mandibles (except for their 
smooth, shining apices), median clypeus and frontal lobes rather 
coarsely and unevenly striate. Trunk, petiole and postpetiole densely 
rugose to scabriculous, becoming scabriculous-muriculate, or even 
denticulate on propodeum, petiolar node, and both tergum and 
sternum of postpetiole. Hidden throughout these roughly sculptured 
surfaces are numerous small but deep punctures with central, piliger- 
ous tubercles. The rugae of the postpetiole are longitudinal and 
subconcentrically curved as seen from above. 
Second gastric (fourth true abdominal) tergum predominantly 
smooth and shining over most of its dorsal, lateral and posterior 
surfaces, but with numerous, spaced piligerous papillulae through¬ 
out, giving way to piligerous punctures caudad, and to the aforemen¬ 
tioned rugae ventrad. Apical segments of gaster delicately strigulate, 
shining. Legs and antennae finely and densely reticulate-punctulate, 
the antennae distinctly so, and matt; the legs more superficially so, 
and weakly shining in part. Coxae obscurely rugulose in addition. 
Body and appendages covered with an abundant pilosity consist¬ 
ing of fine, curved, tapered, whitish hairs, mostly 0.05 to 0.2 mm long 
and obliquely standing (straighter and more erect on clypeus, anten¬ 
nae and legs). A short, dense pubescence is also present and wide¬ 
spread, and especially noticeable on antennae and legs, where it is 
appressed or subappressed and lies longitudinally, and on posterior 
surface of large gastric tergite, where it is mostly decumbent. Apical 
gastric segments, especially the last two, with luxuriant bands or 
brushes of long, fine, pale hairs. 
Body color deep reddish-brown, almost mahogany; second gastric 
(IV abdominal) segment brighter, more reddish; mandibles, anten¬ 
nae, legs and apical gastric segments ferruginous yellow. 
Queen, male and larvae still unknown. 
Holotype (Museum National d’Histoire Naturelle, Paris) and one 
paratype worker (Museum of Comparative Zoology, Harvard Uni¬ 
versity, Cambridge, Massachusetts, USA) taken in a leaf litter berles- 
ate in “foret dense humide de moyenne altitude” (about 1000 m) at 
