Pomona College, Claremont, California 15 
EXPLANATION OF PLATE 
Figure 1. Erytlirieus posticatus ; palpus, legs \. and IV. 
Figure 2. TromhiJium perscabrum, crista, palpus, and hairs. 
Figure 3. Tarsotomus macropalpis, palpus, tarsal claws, and tip of mandible. 
Figure 4. Eupodes hrevipes, palpus and leg I. 
Figure 5. Tarsotomus lerminalis, palpus. 
