78 
Psyche 
[June 
angular lamellae guarding the concave declivity, the declivity reaching 
far up towards the metanotal groove. 
Petiolar node distinct from its anterior peduncle, as seen from above 
transverse, subrectangular, about twice as broad as long. Postpetiole 
Figures 1-4. Epitritus laticeps sp. nov., paratype worker. Fig. 1, side view 
of head and body. Fig. 2, dorsal full-face view of head and mandibles. Fig. 
3, oblique dorsal view of opened left mandible. Fig. 4, ventral inside oblique 
view of apical group of teeth or denticles. Drawn by F. A. McKittrick. 
much broader than petiole and more than twice as broad as long, 
convex above with a shallow median impression, articulated to the 
entire width of the anterior gastric margin. Spongiform appendages 
limited to narrow posterodorsal lamelliform collars on both nodes, 
and absent from anteroventral face of gaster. Gaster laterally sub- 
marginate at the extreme base ; short, coarse costulae fade caudad into 
superficial, indistinct reticulation reaching nearly to the midlength 
of the basal segment ; gaster otherwise shining and smooth. 
Body reticulate-punctulate, opaque, except for the gaster, the inner 
mandibular surfaces and the labral lobes, which are smooth and shin- 
ing. Specialized pilosity, especially the large orbicular, cochlear hairs 
