STAGES IN THE 

 DEVELOPMENT OF 



Idalurus nebuhsus 



By PHILIP B. ARMSTRONG, M.D. 



College of Medicine at Syracuse 

 State University of New York 

 and Marine Biological Laboratory 

 Woods Hole, Massachusetts 



Illustrated by 



JULIA SWOPE CHILD 



Marine Biological Laboratory 

 Woods Hole, Massachusetts 



SYRACUSE UNIVERSITY PRESS SjQj 1962 



PRESS 



