SEA-FISHERIES LABORATORY. 



475 



a marked degree in individuals of the same approximate 

 age. As stated above, the hatching period lasts from 





Carapace breadth 



before casting. 



Cm. 



Carapace breadth 



after casting. 



Cm. 



Katio of 

 Increase. 



1 



T55 



2-05 



l 



31 



2 



2-15 



2-80 



1 

 33 



3 



2-25 



2-95 



1 

 32 



4 



3-10 



4-12 



1 

 30 



5 



3-12 



3-82 



1 

 4'4 



6 



3-40 



4-58 



1 

 2'8 



7 



4-00 



5-25 



1 

 32 



8 



4-25 



5-50 



1 



34 



9 



4-45 



5-55 



1 



•4 



10 



456 



5-70 



1 



4'0 



11 



5-20 



6-60 



1 



37 



12 



5-55 



6-50 



1 

 58 



13 



5-55 



7-20 



1 

 33 



14 



5-70 



7-20 



1 

 38 



15 



6-50 



9-10 



L 



16 



7-80 



9-75 



1 

 40 



17 



12-80 



15-50 



1 



4-7 



Tune to August. The " early " larvae, therefore, will 

 have a considerable advantage over the " late " larvae. 



