no PSYCHE [June 



concave posterior border. The five teeth of the more slender mandibles are more acute. 

 The cljpeus is subhexagonal, broader than long, and coextensive with the anterior border 

 of the head; truncated and somewhat irregular at its anterior margin but not excised or 

 toothed. Antennal scapes long and slender, not flattened at their bases, surpassing the 

 posterior angles of the head by fully half their length. Eyes more narrowly elliptical and 

 more convex than in the media and maxima. In the thorax the sutures bounding the 

 metanotum are vague. There are no differences in color except that the antennal scapes are 

 of a paler red. 



Female. Length 12-12. 5 mm. 



Resembling the maxima and media, the head like the head of the latter, longer than 

 broad, somewhat narrower in front than behind, with straight posterior border and sub- 

 parallel sides. The structure of the thorax exhibits the usual sexual characters ; the prono- 

 tum is prominently marginate in front, transversely convex behind, just in front of the pro- 

 nounced pro-mesonotal suture. Mesonotum convex in front, flattened behind. Epinotum 

 broad and rounded dorsally, with its declivity like that of the worker maxima. Edge of 

 petiolar node excised in the middle. 



Sculpture and coloration as in the maxima with the following differences: Mesonotum 

 anteriorly with a large, elongate, median, black blotch and a similar blotch on either side 

 over the parapsidal furrow. Alar insertions, scutellum, posterior borders of the paraptera, 

 and the whole metanotum black; disc of scutellum blood-red; epinotum and pronotum 

 slightly infuscated, the former along its sides, the latter along its posterior border. Both 

 the anterior and posterior basal surfaces of the petiolar node more or less blackened. Wings 

 hyaline, strongly suffused with yellow, tips more colorless ; veins and stigma brownish 

 yellow. 



Alale. Length 8-9 mm. 



Head small, excluding the slender, edentulous mandibles, very nearly as broad as long; 

 narrower througii the cheeks, which are subparallel and slightly concave, than behind the 

 eyes ; evenly rounded posteriorly. Clypeus shaped somewhat Jike that of the worker minor, 

 its anterior much broader than its posterior margin, without teeth or excision. Antennae 

 long and slender, scape cylindrical, exceeding the posterior angle of the head by about two 

 thirds of its length ; first funicular joint slightly thicker than any of the succeeding joints. 

 Thorax large and robust, conspicuously broad through the alar insertions, with very convex 

 and rounded scutellum and epinotum. Petiole low, very thick antero-posteriorly, convex 

 both on the anterior and posterior surfaces; edge of node rather blunt, in some specimens 

 with a median excision, in others straight and horizontal. Gaster elongate elliptical, 

 dorso-ventrally compressed. Genitalia small and slender, exserted. Legs long with 

 prominent claws. 



Body smooth and finely shagreened, but less shining than in the workers and female ; 

 mesonotum decidedly opaque. Mandibles shagreened, with a few large punctures along their 

 outer edges. Cheeks and occiput sparsely and coarsely punctate or foveolate. 



Pilosity scarse, as in the worker. Hairs on the gastric segments more scattered and 

 irregular in their arrangement, long and prominent on the terminal segments. Antennal 

 scape with a few long hairs at the tip. 



Head black; mouth, mandibles, clypeus, and cheeks, and in some specimens also the 

 front, yellowish red. Color of thorax as in the female, except that the three elongate black 

 blotches on the mesonotum are more distinct. Petiole red, more or less clouded with black. 

 Gaster black, genitalia and posterior edges of segments yellow. Wings like those of the 

 female. Legs and antennae yellowish red. 



