84 
Psyche 
[June 
it from leaf mold by means of the Berlese funnel. One 
Stigmatomma pallipes worker was also taken by the 
same funnel, a fact which has caused me to examine a 
large quantity of pallipes specimens in making sure that 
the new species cannot be an extreme example of the very 
variable common species. I have found it very generally 
true that closely related ant species often occur in the 
same Berlese batch, especially with forms living in or 
beneath the soil cover or in rotten logs, so the proximity 
of the two forms in collecting need not trouble us too 
much. The differences are so striking that I cannot con- 
sider trigonignatha as merely an abnormal specimen of 
pallipes, and the sting rules out the possibility of it being 
an ergatoid male like those found in Ponera. 
Amblyopone ( Stigmatomma ) pallipes (Haldeman) 
Typhlopone pallipes Haldeman, 1844, Proc. Acad. Nat. 
Sci. Pliila., 2: 54, worker. 
Stigmatomma pallipes subsp. montig ena Creighton, 1940, 
Amer. Mus. Novit., No. 1079, p. 7, figs. 6 and 8. 
The remainder of the synonymy is given in Creighton’s 
paper cited above on page 3. The correct spelling of 
Provancher’s name is Arotropus binodosus, not “ Atro- 
pus binodus,” as Creighton has it. 
Since Dr. Creighton’s paper describing the form mon- 
tig ena was published, I have been accumulating Stigma- 
tomma specimens year by year from various states, prin- 
cipally Pennsylvania, North Carolina and Tennessee. I 
have looked over specimens from the Pennsylvania Alle- 
ghenies (where Stigmatomma is often the most abundant 
or only ant occurring in very wet mountain valleys in 
which rhododendron and hemlock form the main cover) 
with the hope of finding montigena specimens. I suc- 
ceeded in finding some specimens with a rather convex 
anterior clypeal border, but these were often mixed in 
the same colony with specimens having the border nearly 
straight. Two specimens from rich, low beech woods in 
a city park in Philadelphia, however, showed very 
marked convexity of the clypeal border to a degree com- 
parable with the montigena types; since these latter 
