OF WASHINGTON. 



59 



8 



PLATE I. 



FIG. i. Chironomus anonymus, larva. 2. Pupa of the same. 3. Chironomus modestus, 

 larva. 4. Pupa of the same. 5. Ceratopogon varicolor, pupa. 6. !*epedonfuscipennis,\axv*. 

 7. Pupa of the same. 8. Tanypus dyari, pupa. 



