LARVAE OF SERGESTES 



65 



Measurements of Mastigopus {continued) 



Length 

 without 

 rostrum 



4-80 



5-30 

 5-40 

 9-00 



S-io 

 6-68 



7-20 



10-00 



Eye 



Length : body Length : width 



Exopod of uropod 



Setose : bare Length : width 



3-40 

 4-00 

 4-00 

 3-00 



4-20 

 4-70 

 S-8o 



6-20 



S. cornutus 

 2-8o 

 2-90 



3-90 



4-30 



S. arcticus 



3-20 



3-5° 

 3-50 

 3-90 



S. crassus 



I -00 

 1-17 



I-I2 



0-50 



1-04 

 1-02 

 1-25 

 1-30 



9-00 

 8-40 

 9-00 



4-5° 



7-20 

 7-90 



6-00 

 7-30 



