HYDROIDA 



6l 



distinct main ring of nematocysts. On the other liand, there is ronnd the polyp body, at its base, a 

 distinctive girdle of large stinging cells. Otherwise, the colony has no particnlar stinging organs. 



The gonophores are styloid. The male gonophores have two chambers with a well marked 

 accnmulation of stinging cells distally, and are densely clustered on .short stems perpendicularly 

 placed on the trunk. Female gonophores are unknown. 



Material: 



The Faroe Lslands: Trangisvaag, on roots of LaiiiiiKina. 



The species was first described by Wright (1S59) by the name of Endoidriitm arhusada from 

 the Firth of Forth. However, another EiidciidriiDii had been ])reviously described by d'Orbiguy 



Text-fig. T. The occurence of Endcndrnim W'righti • and Endendrium annulatiim t^ in tbe Northern Atlantic. 

 (The vothed coastal partie.s denote a scattered occurence of Eitdentium Wrightt according to the litteratnre). 



(1839) bv the name of Tuhiilaria arbuscula from Patagonia, and e\'cn though it will be questionable 

 whether the species of d'Orbiguy can be reidentificd, we arc no doubt right to follow Hartlaub 

 ^1905) and abandon the name of arbiisciila for the northern species. Here we, therefore, adopt the 

 denomination of Hartlaub, Eitdoidriion Wrighti. 



Ei/dri/dn'uiJt Wrighti \^ an absoluteh- littoral species, the occurence of which seems to be restricted 

 to the zone of the I^aminaria. It occurs quite freiiuently from I'ohuskin as far as towards the Trond- 

 hjemfjord, and it is jjcculiar, therefore, that its female gonophores have not yet been pointed out. The 

 species is quite common at the Ikitish I.sles (s. the Text-fig. T), and it has also been recorded from the 

 Mediterranean. Etidn/dri/iii/ Wrigliti is, therefore, likely to be characterized as an Atlantic species of 

 southern character, which is able to penetrate into the northern seas as far as the Trondhjem fjord. 

 The Faroe Islands have now to be added to the localities where the species has been found. 



