210 BULLETIN OF THE 



I have had in mind since that time a new visit to these localities to 

 gather materials for the publication of a monographic paper on the 

 medusae of the Bay of Fundy, but have been unable to make the ne- 

 cessary collecting trips for its completion. It is now thought best to 

 publish some of the more interesting observations which have already 

 been made, as aids to those who may make a more exhaustive local 

 study of these animals, or as a preliminary to a more extensive exami- 

 nation of animals of this group from these localities. 



While the majority of the medusae here mentioned are from Eastport, 

 Maine, and Grand Manan, New Brunswick, a description of a new genus, 

 Hydrichthys, from Newport, R. I., is added.* This 'strange genus is 

 parasitic in its hydroid stage on the sides of an osseous fish, and besides 

 the unique parasitism presents us the anomalous condition of an at- 

 tached hydroid closely related to the well-known Velella and Porpita. 

 The form of Nanomia, the anatomy of Callinema, and the peculiarities of 

 tlie various other medusae here mentioned from the vicinity of Grand 

 Manan, show how characteristically boreal this medusan fauna is, and 

 how much it differs from that of Narragansett Bay. They show how 

 rich the field is for an extended research in this region in this kind of 

 marine study, f 



The short visit which was made to Grand Manan, and the collecting 

 trips to Eastport in 1885 and 1886, have shown me that th'i medusan 

 fauna of the Bay of Fundy and Passamaquoddy Bay, near these places, is 

 very characteristic. It differs markedly from that of Newport, and is 

 distinctly boreal in its affinities. While this paper was in preparation the 

 author has had occasion to study the medusan fauna of the Arctic Ocean, 

 and to publish notices of jelly-fishes collected by Lieutenant Ptay and 

 General Greely in high latitudes. It has been noticed in carrying on 

 this work simultaneously that there is a marked similarity in the fauna 

 of the Arctic and that of the Bay of Fundy, and it may be said that the 



* This curiously modified hydroid was cap*^ured during the summer session 

 (1887) of the Newport Marine Laboratory. 



t The author would here add a notice of his own experience to that of others as 

 to the advantages of Grand Manan for marine zoological work. Wliile many, per- 

 liaps a majority, of tliose who have studied zoology in this place, have spoken of 

 its many advantages for dredging and shore collecting, few have tried surface 

 fishing in tliese waters. 1 had been led to suppose from certain sources, that 

 revelations with the Miiller net would be small in these localities, but I find 

 Grand Manan and Eastport among the best localities which I have visited on the 

 New England coast for the collection of pelagic and " surface animals " with the 

 dip-net. 



