64 EDWARD DRANE CRABB. 



From the foregoing explanations it is apparent that in the 

 process of fertilization foreign sperms have little or no chance 

 to compete successfully with sperms which develop and ripen in 

 the same acinus with the egg. Therefore one could hardly expect 

 cross-fertilization to be the normal method of reproduction in 

 Lynmcca stagnates appressa. 



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v ^ 



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