8f Cocker ell — Nomenclature of the Uydromeduscs . 



Order TRACHYMEDUSiE. 

 Fam. Olindiid^;. 



Gonionemus A. Ag. 



vertens A. Ag. 

 Cubaia Mayer. 



aphrodite Mayer. 

 Vallentinia Browne. 



falklandica Browne. 

 Olindias F. Mull. 



sambaquiensis F. Mull. 

 Olindioides Goto. 



formosa Goto. 



Fam. Petasid^;. 



Petasus Haeck. 



atavus Haeck. 

 Aglauropsis F. Mull. 



agassizii F. Mull. 

 Craspedacusta Lank . 



sowerbil Lank. 

 Microhydra Potts. 



ryderi Potts. 

 Mseotias OstroumofT. 



inexspertata OstroumofT . 

 Gossea L. Ag.* 



corynetes (Gosse). 



Fam. LimnocnididjE. 



Limnocnida Gunth. 

 tangavjicse Gunth. 



Fam. Ptychogastriid^. 



Ptychogastria Allm. 

 polar is Allm. 



Fam. Trachynemid^. 



Sllbf. TRACHYNEMINiE. 



Trachynema Gegenb. 



ciliatum Gegenb. 

 Sminthea Gegenb. 



eurygaster Gegenb. 



* Gossea Bate, in Crustacea, is of the same year (1S62). Dr. Mayer has looked this 

 up, and decides that Agassiz has priority. 



