598 



REPORT OF COMMISSIONER OF FISH AND FISHERIES. 



diq 



Halicreas is the type of a new family of medusae, the Halicreasidae, 

 which stands intermediate between the Narcomedusae and the Acras 

 peda. 



Among the smaller medusae there are many Oampanellidae. 

 Solmaris incisa, sp. nov. 



A giant Solmaris (50-60'°'" in diameter) of a new species {8. incisa) is 

 represented by three specimens from the following stations: 



This species has thirty-two radial pits or furrows on the subumbral 

 side of the disk. These indentations are confined to the corona. 



HTDROIDA. 



The hydroid gonophores are very numerous, and there are species of 

 Zygodactyla, sp. nov., and Mesonema, Staurophora laciniata Ag., Turris 

 episGopalis Fewkes, several Oceahidae, and one or two minute genera 

 which have not been satisfactorily examined. 



The collection also contains specimens of Porpita Linnceana Less., 

 Velella mutica Bosc, and Bataria (young Velella ?). There is a single 

 Agalma nectocaly x, a large Gleha, and fragments of Agalmidae. Guboides 

 and Sphenoides were found for the first time in the Gulf Stream. 



The indications are that there are several genera and species of Ehi- 

 zophysidae in the Gulf Stream. The collection contains fragments of 

 three or four undetermined species, besides two species which could be 

 identified. There is also a new genus of Ehizophysidae in the collection. 

 A new species of Ehizophysa is allied to B. inermis of Studer. In this 

 species there are no tentacles, and the polypites and sexual organs 

 arise in clusters at intervals on the axis, as in Apolemia. The float of an- 

 other unknown Ehizophysa is 15""" in shorter, 30""" in longer diameter, 

 m alcohol. This is the largest Ehizophysa float ever recorded. A short 

 section of the stem of this giant still remains with the float, but the re- 

 mainder, with its appendages, is broken and lost, so that identification is 

 impossible. 

 Pterophysa grandis, gen. et sp. nov. 



A magnificent new genus of Ehizophysidae, which will be described 

 under the name Pterophysa, is one of the most important additions 

 made by the "Albatross" to our Medusan fauna. This genus has two 

 lateral muscular wings on the polypites and no tentacles. The sides of 

 the polypites are specialized into grasping organs, which, in conjunc- 

 tion with the lateral folds, convert these organs into suckers, by which 



