1923] Two New Mississippi Ants of the Subgenus Colohopsis 87 
Hairs yellowish short, erect and obtuse on the cheeks, 
longer and more tapering on front and vertex. Gaster above 
and below with scattered tapering hairs. There are a few short 
hairs at the tips of the scapes and femora. 
Anterior half of head light yellowish, posterior half of head 
including antennae dark brown, thorax and appendages brown, 
abdomen black, with base of first and second segment tinged 
with yellow. 
Worker. Length, 3-3.5 mm. 
Head longer than broad, broader behind thaii in front, 
with convex occipital border and somewhat less convex sides. 
Mandibles small, 4 toothed. Clypeus convex, almost square 
and not noticeably keeled. Antennal scapes flattened, gradually 
tapering from base to tip. Thorax very deeply constricted at 
the junction of meso-epinotum. The base of the epinotum in 
profile appears flattened and forms with the declivity a distinct 
angle. Petiole low, robust, with convex anterior and superior 
surfaces, the posterior margin of the latter deeply excised to 
form two distinct lateral teeth, the posterior surface of the 
petiole flattened. Gaster oblong. Legs similar to those of the 
soldier. 
Body and appendages shining, distinctly shagreened, the 
head and thorax more coarsely than the gaster, the cheeks and 
upper surfaces of the head with scattered punctures. 
Head, legs and gaster sparsely covered with delicate, white, 
appressed hairs. Clypeus, front, vertex, tips of antennae and 
femora and the gastric segments with a few scattered and longer 
hairs. 
Dark brown; head darker, mandibles, cheeks and appen- 
dages light brown, gaster black. 
The ants on which these descriptions are based were col- 
lected at Starkville, Mississippi, on January 11, 1922. Like 
mississippiensis this subspecies has a fondness for nesting in 
white ash but has also been taken by Mr. Andrew Fleming at 
