MAYER: MEDUSyE FROM THE TORTUGAS, FLORIDA. 15 



III. SIPHONOPHORiE. 



PAOI 



77 

 ( Abyla pentagona, Eschscholtz ' ' 



1 Aglaisma cuboides, Chun '' 



i Abyla quincunx, Chun 



i At-laisma quincunx = Aglai8nioi(les quincunx, Chun '» 



Agalma Pourtalesii, Agassiz and Mayer 79 



Agalma virida, nov. sp 



Chunia capillaria, nov. gen. et sp 



( Diphyes bipartita, Costa 



I Eudoxia campanula, Leuckart 



\ Diphyopsis campanulifera, Chun t^ 



\ Ersaea Lessonii, Chun 



j Diphyopsis hispaniana, nov. sp 



I Ersaea hispaniana, nov. sp 



{ Diphyopsis picta = Doramasia picta, Chun '^ 



I Ersaea picta, Chun 



Physalia pelagica, Bosc 



Porpita Linnaeana, Lesson 



Rhizophysa clavigera, Chun __ 



Rhizophysa Eysenhardtii, Gegenbaur '^ 



Rhizophysa Murrayana, Chun ' 



5 Sph^ronectes gracilis, Haeckel 'J^ 



1 Diplophysa inermis, Gegenbaur _[* 



Velella mutica, Bosc 



82 



IV. CTENOPHOR^. 



Beroe Clarkii = Idyiopsis Clarkii, L. Agassiz 



Bolina vitrea, L. Agassiz ^ 



Eucliaris multicornis ? Eschscholtz ^^ 



Hormiphora plumosa 1 Chun 82 



Ocyroe crystallina, Rang 



INTRODUCTION. 



The medusfE described in the following paper were obtained by the 

 author while assistant to Mr. Alexander Agassiz in collecting for a 

 work upon the Medusa fauna of the Atlantic Coast of North America. 

 Three expeditions were made, for Mr. Agassiz, to the Tortngas, Florida, 

 extending from June 10-22, 1897; June 25-August 19, 1898; and 

 May 14-July 4, 1899. The manuscript has been submitted to him, 

 and the descriptions herein given will ultimately be published also 

 in the new edition of " North American Acalephai " now in preparation 

 by A. Agassiz and A. G. Mayer. 



We wish to avail ourselves of this opportunity to express our appre- 

 ciation of the cordiality and kindness of George R. Billbury, Esq., head 



