REPORT OF COMMISSIONERS OF INLAND FISHERIES. 233 



EXPLANATION OF PLATE 33. 



Young male lobster; fourteenth stage; length, 65 mm.: age, approximately 14 months. 



First antenna: 



These are relatively longer than in the fourth stage; the olfactory setae 

 are not distinct. 



Second antenna: 



The endopodites have developed into long whip-like filaments longer 

 than the whole body; the exopodites show no further development. 



Eyes: 



These are relatively smaller. 



Chelipeds: 



These are differentiated, after the sixth stage, into a "nipping" and a 

 " crushing" claw; the tip of the dactyl often closes far past the tip of 

 the propodos. 



Ambulatory appendages: 



As in the fourth stage; the atrophied stumps of the exopodites disap- 

 pear after the fifth stage. 



Abdominal appendages: 



Much as in the fourth stage; the external reproductive organs (modified 

 swimmerets in the case of the male) have appeared during the seventh 

 or eighth stage, on the first abdominal segment. 



