82 Cocker ell — Nomenclature of the Hydromedusse. 



Fam. Eucopiid^;. 

 Subf. Eucopiin^;. 



Eucopella v. Lendenf. 



bilabiata (Coughtrey). 

 Agastra Hartl. 



mira Hartl. 

 Euc opium Haeck. 



pictum (Kef erst. & Ehlers.). 

 Obelia Per. & Les. 



marina (Slabber).* 

 Tiaropsis L. Ag. 



multicirrata (Sars). 

 Acosmetira n. n. 



(Cosmetira Hartlaub, not Forbes). 

 pilosella (Forbes). 

 Subf. Clytiin^. 



Clytra Lamx. 



volubilis (Ellis & Soland.). 

 Phialidium Leuckart. t 



hemisphaericum (Per. & Les.) 

 Phialopsis Torrey. 



diegensis Torrey. 

 Phialucium Maas. 



virens (Bigelow). 

 Blaclxfordia Mayer. 



manhattensis Mayer. 

 Pseudoclytia Mayer. 



pentata Mayer. 

 Gastroblasta Keller. 



timida Keller. 

 Eucheilota McCrady. 



ventricularis McCrady. 

 Mitrocoma Haeck. 



annse Haeck. 



*Some of Slabber's names have been rejected, not being binomial, but the present 

 one is truly so, Dr. Mayer informs me. 



+ For Phialidium I had substituted the much earlier name Thaumantias Eschsch., 

 with the same type-species, but as the case is not clear, I retain Phialidium in the list. 

 I thought that Oceania Per. <& Les., with the same type, might be available, following 

 Agassiz. Dr. Mayer tells me that Leuckart in 1856 applied Oceania to what we now call 

 Clavnla, the Oceania coccinea Leuck. being Clavula pileala (Forsk.). It will be necessary 

 to reexamine the older authors to settle this case, but it seems improbable that Phiali- 

 dium can stand. 



