388 Annals Entomological Society of America [Vol. XII, 



EXPLANATION OF PLATES. 



Plate XXX. 



' (Figures seven diameters.) 



Fig. L Masses of mud cells of Brachynus cyanipennis . Cells made by beetles in 



■ captivity. 

 Fig. 2. Mud cells of Brachynus cyanipennis as found in nature on the under surface 



of a stone. 

 Fig. 3. Mud cell of Galerita hicoJor on the under surface of Impatiens leaf. 

 Fig. 4. Mud cell of Chlaeniiis impunclifrons on under surface of Benzoin leaf. 



Plate XXXL 



(Figures seven diameters.) 



Fig. L Mud cells of Chlaenius aestivus on dead twig. 



Fig. 2. Mud cells of Chlaenius aestivus showing lidlike opening for escape of the 



larva. 

 Fig. 3. Mud cells of Chlaenius tricolor on sedge, Eleocharis tenuis. 



a. Lateral aspect showing fold. 



b. Lateral aspect showing side opposite fold. 



c. Lateral aspect, fold removed showing egg. 



Fig. 4. Mud cells of Chlaenius cericeus. 



a. Cell which was removed from surface of a stone. 



b. Cell on sedge. 



