ASSORTIVE MATING IN CHROMODORIS ZEBRA 



263 



u 



\Z )4 16 



]o/c?/ kngr/7. 



18 cr7]3. 



12 



10 15 20 25 30 35 40 45 50 55 CCm. 



Fig. 11 Showing the relation between "total length" and "mantle length" 

 in 103 uninjured specimens of C. zebra (cf. Fig. 2). The relation is almost, if not 

 quite exactly, linear. 



Fig. 12 Frequency distribution of the volumes of specimens of C. zebra. 

 The class unit is 5 ccm. 



