Plate V. 



All the drawings are by J. Henry Blake. 



Kg. 1. Xylobius similis, |- ; three segments from just in front of the 

 middle of fig. 2, further enlarged and shown in outline. 



2. Xylobius similis, -f- ; see also fig. 1. 



3. Xylobius dawsoni, ^. 



i. Mazonia sp., ^; the anterior portion is below. 



5. Mazonia acadica, |-. 



6. Mazonia acadica, -J. 



7. Perhaps a part of the inferior 1 abdominal surface of a 



Mazonia, L". 



8. Mazonia sp., perhaps acadica, f. 



9. Mazonia sp., perhaps acadica, ^. 



