154 University of Micliigan 



PLATE XIX 



Variation in Cerion nva hnipensis 

 Fig. A1. Type of form djerimensis (C17c). 



Figs. C3, 6, D3, 4, 6, E4-G, F3-5 from substation Cbl7. F5 is the 

 ty~pe of l-nipensis. 



Fig. C5 from station C20. 



Figs. D2, El, 2, F2 from station CIS. 



Fig. E3 from station Cbl6. 



Fig. F6 from station Cb20. 



