MUSEUM OF COMPARATIVE ZOOLOGY. 



301 



The only Discophores seut me are PeriphyUia hyacintJiina, Steen., and 

 an unknown genus of the Pelagidaj. Three new hydroids represented 

 by seA-eral specimens were found. The whole material upon which my 

 observations were made is as follows.* 



Surface. 



No. Spec. 

 1 



Apolemia. Off Block Island, 1 880. Surface, No. 6538. 



Agalma elegans. Gulf Stream. 



Gleba (Hippopodius) hippopus. 



Haliphyta magnifica, gen. et sp. noT. 



Biphyes. 



Hydroida. 

 Trachynema digitale, A. Ag. 



u <( a 



Calycopsis typa, gen. et sp. nov. 



Chromatonema rubrum, gen. et sp. nov. 



Halicreas minimum, gen. et sp. nov. 



DISCOPHOEA. 

 PeriphyUia hyacinthina, Steen.! 

 Many specimens of the young of this medusa were taken. 



* For locations and depths corresponding to the stations, see Prof. Verrill's lists, 

 op. ciL, XX. p. 391, and he. ciL, pp. 292, 294. 



t Peron designated two very different medusse under the name Caryhdea peri- 

 phylla,. One of these was undoubtedly the above mentioned, while the other was 



