REPORT OF COMMISSIONERS OF INLAND FISHERIES. 22'/ 



EXPLANATION OF PLATES 28 AND 29. 



Second larval stage; length, 9.5 mm.; age, 6 days. 



First antennae: 



The endopodites have grown out over half the length of the expopo- 

 dites; thelatterextendnearly to the end of the rostrum; slight evidences 

 of segmentation can now be observed on both endopodites and exopo- 

 dites; the specialized olfactory setae are present on the distal portion 

 of the inner margin of the exopodites. 



Second antenna: 



The endopodites now equal or excel in length the exopodites; traces of 

 segmentation are now observable upon the endopodites. 



Eyes: 



Still large and prominent, but less so than in the previous stage. 



Maxillipeds, chelipeds, ambulatory appendages: 

 Very much as in first stage. 



Abdominal appendages: 



The appendages of the second, third, fourth, and fifth abdominal seg- 

 ments have appeared but are not yet functional. 



Tail: 



As in first stage. 



