BIOLOGICAL BULLETIN 



OF THE 



flDarine Biological Xaborator^ 



WOODS HOLL, MASS. 



Vol. XIV 



February, i 908 



No. 



Andrews, E. A. 



Eyclesheimer, Albert C. 



and 

 Wilson, James Meredith 

 Morgan, T. H. 



Riddle, Oscar 



Pricer, John Lossen 



CONTENTS 



Page 



The Annulus of a Mexican 

 Crayfish 121 



The Adhesive Organs of 

 Amia , 134 



Some Further Records 

 Concerning the Physiol- 

 ogy of Regeneration in 

 Tubular ia 149 



The Cause of the Produc- 

 tion of " Down" arid 

 other Down-like Struc- 

 tures in the Plutnages of 



Birds 163 



The Life History of the 

 Carpenter Ant 177 



Published Monthly by the 

 MARINE BIOLOGICAL LABORATORY 



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LIBRAIRIE 

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Single Numbers, 75 Cents. Per Volume (6 numbers), $3.00 



Entered October 10, 1902, at Lancaster, Pa., as second-class matter, 

 under Act of Congress of July 16, 1894. 



