136 
Psyche 
[December 
which grade into pubescence. Pubescence elsewhere very 
fine and so sparse that it is not usually noticeable except 
under considerable magnification or in very oblique light. 
Color : clear, golden yellow, the inner border of the man- 
dibles blackish brown. Edges of the thoracic sclerites and 
gastric segments a slightly deeper brownish yellow than 
the rest of the surface. Wings slightly iridescent, faintly 
tinged with yellow, the veins a deeper yellow, the stigma 
brown. 
Male: head (mandibles excluded) 1.0 mm.; thorax 2.0 
mm. ; overall length 6. 5-7.0 mm. 
Upper surface of the head finely coriaceous and feebly 
shining except for the area between the median ocellus and 
the antennal insertions, where the coriaceous sculpture is 
largely replaced by fine punctures. Mandibles a little more 
heavily sculptured and less shining than the rest of the head. 
Antennae finely and densely granulose, opaque. Lateral 
portions of the pronotum feebly coriaceous, less shining 
than the median portion which is covered with rather 
coarse, scattered punctures. Scutum and scutellum heavily 
coriaceous and dull except for an irregular, shining band 
down the middle of each. This band is coarsely punctate 
and very feebly coriaceous. Epinotum feebly coriaceous and 
rather strongly shining above, more heavily coriaceous and 
punctate on the sides. Mesothoracic sternite strongly shin- 
ing and coarsely punctate, the episternite feebly coriaceous 
and strongly shining. Petiolar nodes feebly shining and 
weakly coriaceous. The gaster very feebly sculptured and 
much more shining than the petiolar nodes. 
Erect hairs present on the ocellar area of the head, the 
scutum and the scutellum. Dorsum of the epinotum, the 
petiolar nodes and the dorsum of the anterior gastric seg- 
ments with one or two erect hairs each at most, often hair- 
less. Dorsum of the terminal gastric segment with several 
erect hairs. There are numerous erect hairs, which form 
Explanation of Plate 12 
Pseudomyrmex apache sp. nov. Fig. 1. Female, profile view. Fig. 2. 
Worker, profile view. Fig. 3. Head of female. Fig. 4. Petiole and post- 
petiole of worker, from above. Fig. 5. Head of worker. Fig. 6. Head of 
male. Fig. 7. Male, profile view. 
