Tiilian. — Louisiana Shrimp? Industry. 



117 



resume their erratic movements until they approach matur- 

 ity, when a definite migration to the sea can be traced. 

 This can be followed easily by watching the growth of the 

 smallest individuals which came in late the previous summer, 

 and wintered at a size of 2 inches. These all reach maturity 

 and go to sea toward the latter part of May, and as the new 

 crop of babies is just beginning to come in, there are prac- 

 tically no shrimp of any size in the inside waters for a certain 



Diagi-am illustrating the sizes of shrimp (Penaeus setiferus 

 found in Louisiana throughout the year. 



In the above diagram, measurements are in inches, represented by 

 the vertical lines, the dotted squares indicating that shrimp between 

 those sizes are present in appreciable abundance during the correspond- 

 ing months. The blank spaces indicate that shrimp of those sizes are 



