64 
Psyche 
[June 
transverse depression close to the base. Mandibles folded 
beneath the labrum, smooth on the outer surface, ending in 
a long, finger-shaped, blunt apex, the inner margin with 
two faint denticulations before the apex. Thorax elongate 
rectangular, about one and one-fourth times as long as its 
greatest width, distinctly narrowed anteriorly and very 
slightly posteriorly, much lower than wide. Anterior margin 
of pronotum almost straight, rounded off, without carina 
or rim, slightly depressed in the middle; humeral angles 
slightly raised into blunt, broadly rounded humps. Meso- 
notum distinctly longer than wide, almost hexagonal in out- 
line, the anterior margin forming a very low outward curve ; 
slightly and uniformly convex in its anterior half, flattened 
in its posterior half ; without traces of parapsidal furrows, 
but with a fine, incomplete furrow r on each side in the post- 
erior half (above the tegula) and a fine, median somewhat 
raised line in the anterior half. Tegula about two and one- 
half times as long as wide; the outer margin shallowly 
notched before the middle; the apex covering the base of 
the scutellum on the side. Scutellum very large, semi-ellipti- 
cal, with a broadly rounded apical margin which does not 
entirely cover the postscutellum in a dorsal view; evenly 
convex throughout, with a very low, blunt, somewhat elong- 
ate, median tubercle close to the anterior margin ; mesonotal 
suture not foveolate. Postscutellum very short; its median 
portion semi-elliptical from behind, divided into a very 
short, slightly swollen, anterior, horizontal portion (visible 
behind the scutellum from above) and a much longer, ver- 
tical, posterior area (in a plane with the concavity of the 
propodeum). Mesepisternum divided from the epimeron, 
but without a suture between the upper and the lower plates, 
without prepectal carina or suture and not depressed anteri- 
orly into epicnemia for the front legs ; the usual impressed 
line marking the sternopleural suture, distinct. Propodeum 
short, squarely and vertically truncate behind, very slightly 
convex on the sides from above; dorsal areas broadly sep- 
arated from each other by the postscutellum, sloping 
gradually into the concavity (superior ridges not de- 
veloped) ; lateral ridges blunt; inferior ridges carinate, 
sharp ; concavity wide, very shallow, with a deeper median 
