ADVERTISEMENT 



The present work is the first of the New York Aquarium 

 Nature Series. It is designed chiefly as an aid to the study of 

 the marine invertelDrate life of the region about New York. It 

 will be found a valuable reference book for visitors studying 

 the collections of the Aquarium, as the species herein considered 

 are very largely those which may be seen there alive, from 

 time to time. The book is a gift of tlie author to the New York 

 Zoological Society, and the proceeds from all sales are devoted to 

 the increase of the collections of the Aquarium. 



C. H. TOWNSEND, 

 Director of the Aquariuvi. 



