34 CALIFORNIA ACADEMY OF SCIEXCES [Proc. 4th Ser. 



EXPLANATION OF PLATE 7 



Fig. 1. Mopalia egretta Berry. Dorsal view of head valve of para- 

 type [640] : X 12^. 



Fig. 2. Mopalia egretta Berry. Dorsal view of valve vi of para- 

 type l640]:x12i-^. 



Fig. 3. Mopalia egretta Berrj-. Dorsal view of tail valve of para- 

 type [640] :xl2i/.. 



Fig. 4. Alopalia egretta Berry. Interior view of head valve of para- 

 type [640] : X 121^. 



Fig. 5. Mopalia egretta Berry. Interior view of valve vi of para- 

 type [640]:xl2;^. 



Fig. 6. Mopalia egretta Berry. Interior view of tail valve of para- 

 type [640]:x\2y2. 



