670 GEOLOGICAL SURVEY OF THE TERRITORIES 



EXPLANATION OF PLATE XXVIII. 



Figs. 1-5. Ustheria mexicana Glaus, Jmmature specimens from Kentucky {E. elarkii 



Pack.). 

 Fig. 1. Thoracic leg, female. 

 Fig. 2. Fifth leg from the last. 

 Fig. 3. First antenna. 

 Fig. 4. Second antenna. 

 Fig. 5. Telson. 

 Fig, 6. Estheria jonesii Baivd ; second an teima. 



