194 
Psyche 
[December 
the outer surface of the mandible to near its base. Thorax rec- 
tangular, stubby, slightly narrowed anteriorly and a little more 
posteriorly ;^about one and one-fifth, times as long as its greatest 
.width and about as high as wide. Anterior margin of pronotum 
with a very slight outward curve, rounded off, without carina or 
rim; the humeral angle not projecting, broadly rounded; the 
lateral margin broadly curved and with a fine, sharp carina ex- 
tending from the humeral angle to the mesopleuron and forming 
the upper border of the epicnemia for the front legs. Mesono- 
tum but little longer than wide, pentagonal in outline with the 
anterior third produced and the anterior angle semicircular ly 
rounded; very slightly and uniformly convex; with deep, con- 
tinuous parapsidal furrows and a finer, incomplete furrow on 
each side in the posterior third and parallel with the tegulse; a 
fine median impressed line in the anterior half. Tegulse much 
longer than wide, narrowed posteriorly, reaching the base of the 
scutellum on the sides; post-tegulse not developed. Scutellum 
very large, broadly triangular, completely covering the post- 
scutellum, which is hidden when looked at from above, with a 
median, raised portion, the margin of which is thickened and 
connected at the apex with a slight, median, longitudinal ridge 
which runs over the apical two-thirds; on each side of this 
median ridge the surface of the scutellum is flattened, but not 
distinctly grooved; the base is deeply depressed and the meso- 
notal suture bears a number of foveolse; the marginal area of 
the scutellum forms an abruptly depressed, flat plate, which is 
broad on the sides and narrows gradually toward the apex, where 
it is but indistinctly divided from the median, raised area. Post- 
scutellum very short, transversely elliptical, not visible from 
above; its surface vertical and in a plane with the concavity of 
the propodeum. Mesepisternum divided from the epimeron 
and with a complete suture separating the upper from the lower 
plate; anterior and posterior areas of the mesopleura abruptly 
constricted to form the edges of deep epicnemia for the front and 
middle legs; these depressions, however, not bordered by sharp 
prepectal carinse (as in the case in Trimeria buyssoni ); no pre- 
pectal suture is present, but the impressed line which marks the 
sternopleural suture is well marked. Propodeum short, squarely 
