1 



MAYER: MEDUSAE FROM THE TORTUGAS, FLORIDA. 15 



III. SIPIIONOPHORiE. 



PAOI 



Abyla pentagona, Esclischoltz .',... 77 



Aglaisma cuboides, Chun 77 



j Abyla quincunx, Chun 78 



I Aghiisma quincunx = Aglaisraoides quincunx, Chun 78 



Agalma Pourtalesii, Agassiz and Mayer 79 



Agalnia virida, nov. sp 80 



Chunia capillaria, nov. gen. et sp 78 



Diphyes bipartita, Costa 74 



Eudoxia campanula, Leuckart , .... 74 



\ Diphyopsis carapanulifera, Chun '. 75 



^ Erscea Lessonii, Chun .... 75 



Diphyopsis hispaniana, nov. sp 76 



Ersaea hispaniana, nov. sp 77 



Diphyopsis picta = Doramasia picta, Chun 75 



Erssea picta, Chun 75 



Piiysalia pelagica, Bosc 73 



Porpita Linnaeana, Lesson 72 



Rhizophysa clavigera, Chun 72 



Rliizophysa Eysenliardtii, Gegenbaur 72 



Rhizophysa Murrayana, Chun 72 



( Sphajronectes gracilis, Haeckel 73 



I Diplophysa inermis, Gegenbaur ^ 74 



Velella mutica, Bosc 71 



IV. CTENOPHORiE. 



Beroe Clarkii = Idyiopsis Clarkii, L. Agassiz 82 



Bolina vitrea, L. Agassiz 81 



Eucharis multicornis ? Eschscholtz 82 



Ilorniiphora plumosa ? Chun 82 



Ocyroo crystallina. Rang 81 



INTEODUCTION. 



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 Tortugas, 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 idtimately 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. lUllbury, Esq., head 



