138 
Wisconsin Academy of Sciences , Arts, and Letters. 
EXPLANATION' OF PLATE X. 
Eig. 1. Eirst antenna. D. 2. To the right a seta enlarged. 
Eig. 2. Second antenna. D. 3. Outer view of right one. 
Eig. 3. Mandible. D. 3. Same view as second antenna. 
The masticatory teeth are: much thicker and heavier 
than here represented. 
Eig. 4. Maxilla. D. 3. Same view as second antenna. 
Eig. 5. Third leg. D. 3. Same view as second antenna. 
Eig. 6. Muscle scars. D. dorsal A. anterior. 
