520 



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voo. 8T 



recalling P. axonudeata (Metcalf, 1923a). Later the nuclear arrange- 

 ment becomes irregular. In the dividing nuclei the nucleolus number 

 is clearly seen to be 4. In most of these larval nuclei, though not in 

 division, the nucleolar masses are 4. No flattened larvae are seen, 

 that is, there is no Zelleriella stage in the development of Cepedea. 

 All this agrees with the phylogeny as I postulated it on the basis of 

 comparative anatomy, deriving Cepedea from Protoopalina through 

 forms like P. axonudeata. 



CEPEDEA LONGA HISPANICA Metcalf 



Figure 79 

 Cepedea hispanica Metcalf, 1923a, p, 161. 



Figure 79.— Cepedea longa hiapanica Metcalf from Rana limnocharit, X 460. 



