98 PSYCHE [June 



their bases and much farther apart than long, directed upwards, backwards, and outwards. 

 Petiole in profile with long concave ascending nodal surface and convex ventral surface ; 

 the node is acute, transverse, with median emargination and short, concave posterior 

 declivitj ; seen from above the petiole is small, not more than one and a half times as long 

 as broad, broader behind than in front, constricted in the middle, with rather acute posterior 

 angles. Postpetiole three times as broad as the petiole and more than twice as broad as 

 long, with a small, acute projection in the middle on either side ; in profile the dorsal surface 

 is evenly convex and longer than the more uneven ventral surface. Gaster rather large, 

 elliptical, flattened on its dorsal surface. Legs of moderate length and of the usual 

 conformation. 



Mandibles shining, indistinctly reticulate, covered with large piligerous punctures. 

 Clypeus shining in the middle, faintly reticulate like the mandibles, on either side with a 

 few coarse longitudinal rugae. Frontal area impressed, shining, with a few longitudinal 

 rugae on either side. Head opaque throughout, covered with coarse reticulate rugae enclos- 

 ing more finely reticulate interrugal spaces ; the main rugae with distinctly longitudinal 

 trend only on the front and cheeks. Cephalic furrow crossed by numerous transverse rugae 

 especially towards the occipital border. Antennal scape shining, finely reticulate. Thorax, 

 petiole, and postpetiole opaque like the head, but more finely reticulate rugose ; only the dor- 

 sal surfaces are roughened, the pro- and mesonotum being crossed by a few coarse and irreg- 

 ular transverse rugae. Postpetiole with about eight shallow longitudinal impressions on its 

 dorsal surface. Gaster and legs shining, their surfaces finely and regularly reticulate. 



Body and appendages invested with rather long, more or less erect, tawny hairs. 



Rich ferruginous red throughout; legs and antennae but little paler than the body; gas- 

 ter somewhat infuscated posteriorly, anteriorly pellucid and in many specimens appearing 

 as if filled with a wine-red fluid so that this region has a more brilliant color than the 

 remainder of the body. 



Worker. Length 2.5-3. "irn- 



Head but little longer than broad, its posterior border rather straight but not concave. 

 Mandibles rather slender, 8-toothed, the first, second, and fourth teeth from the apex being 

 longer than the others. Clypeus sinuately emarginate in the middle, with a median and 

 on either side two lateral longitudinal ridges or carinulae. Frontal area triangular, as long 

 as broad, with a median longitudinal ridge. Antennal scapes not flattened, distinctly enlarged 

 at their distal ends ; exceeding the posterior angles of the head by somewhat more than 

 twice their transverse diameter. Pronotum rounded above and on the sides, spheroidal ; 

 mesonotum projecting upwards as a transverse ridge which is not concave in the middle 

 when seen from behind, separated by distinct constrictions from the pro- and epinotum. 

 The latter shaped like that of the soldier. Petiole slender, fully twice as long as broad, in 

 other respects like the corresponding segment of the soldier. Postpetiole nearly three times 

 as broad as the petiole, hardly twice as broad as long, its sides and dorsal surface rounded, 

 the angles of the former being very indistinct. 



Sculpture like that of the soldier but feebler, especially on the head. Pilosity and color, 

 too, as in the soldier, except that there is a large black spot on the ^"ertex in many speci- 

 mens. 



Described from numerous soldiers and workers. These were taken from four 

 nests, the only ones I have seen during as many years. They were all situated in 



