

/^■r^ 



]r- 





'^\(ii^\ 



^^r\ 





A^A, 



.r^i 



Return to 



LIBRaRY OF MARINE BIOLOGICAL LABORATORY 



WOODS HOLE, MASS. 



Loaned by American Museum of Natural History 



A^r 



f \( ' f ^ 



^B 



<^(r^r-<^^ 



^r\r\r\r\r\r\fsr^, 



