PSYCHE 
VOL. XLI DECEMBER 1934 No. 4 
DESCRIPTIONS OF THREE NEW NORTH AMERICAN 
ANTS WITH CERTAIN ECOLOGICAL OBSERVATIONS 
ON PREVIOUSLY DESCRIBED FORMS 
By William Steel Creighton 
College of the City of New York 
Myrmica (Manica) parasitica sp. nov. 
Worker: Length; 5 mm. 
Head exclusive of the mandibles quadrate, as broad as 
long, the sides and occipital border feebly convex, the occi- 
pital angles broadly rounded. Anterior border of the cly- 
peus entire, angular, the portion in front of the median lobe 
flat, the lateral portions at either side straight but receding 
toward the insertions of the mandibles. Median lobe of the 
clypeus strongly convex in two planes, sharply separated 
from the large, triangular frontal area. Mandibles large 
and powerful, the external border rather feebly convex ex- 
cept near the tip where it turns inward sharply. Mastica- 
tory margin armed with a long, sharp and rather thin 
terminal tooth and a much shorter and stouter subterminal 
tooth; the remainder of the masticatory margin bearing 
12 - 15 small teeth. Frontal carinse short, thick, bluntly 
pointed in front and rather widely separated. Antennal 
scapes short and rather thick, strongly and abruptly curved 
at the base; in repose the tip of the scape surpasses the 
occipital border by an amount less than its greatest thick- 
ness. First funicular joint longer than broad and some- 
what broader than the adjacent joint, joints 2-6 gradually 
increasing in diameter and length, the four apical joints 
