26 
Psyche 
[March 
Head wider than long, obovate, anterior end broader. 
Compound eyes large and occupying fully half the sides 
of the head ; three ocelli situated on prominent elevations 
of the vertex which cause the head to appear produced 
dorsally. Clypeus convex, anterior border entire. Mandibles 
small, narrow, with one apical tooth and two minute 
denticles. Frontal area broadly triangular. Antennae 13- 
segmented ; scape short, equal to the combined length of 
the first two funicular segments; first funicular segment 
globular. 
Thorax almost U /2 times as wide as the head. Mesonotum 
flat dorsally, scutellum convex ; Mayrian furrows present 
except for the medial stem which is almost obsolete; 
parapsidal furrows or sutures absent; epinotum descends 
rapidly to the petiolar junction, epinotal spines absent. 
Petiolar node low and rounded, except for slight superior 
angles. Postpetiole broad and subquadrate, lateral conules 
very short and blunt. Gaster of the usual elliptical shape. 
Stipites convex, curved medially and bulbous at the apex; 
cerci minute and cylindrical. 
Head coriaceous, sculpture consisting of fine striations 
and granules, subopaque. Thorax shining except for fine 
striae on the anterior vertical border of the mesonotum ; 
entire metathorax and propodium finely granular, opaque. 
Petiole, postpetiole and gaster smooth and shining. Fine, 
pointed hairs cover all surfaces of the body and appendages 
except the scapes and funiculi. Head black, mandibles and 
antennae yellow, thorax, abdomen and legs brown. Wings 
transparent, stigma pale brown, one discal cell. 
Holotype : soldier, located in the author’s collection. 
Paratypes : 219 soldiers, 379 workers, 4 females, and 40 
males, deposited in the author’s collection, and the collec- 
tions of W. S. Creighton, the American Museum of Natural 
History, the Museum of Comparative Zoology, and the 
United States National Museum. 
Type locality : Three miles east of Applegate, Oregon; 
elevation 1500 feet. This town is about 20 miles west of 
Medford, on the northern slope of the Siskiyou Mountains, 
in southwestern Oregon. 
Material examined : The specimens upon which this 
