Archive image from page 68 of The Danish Ingolf-Expedition (1916). The Danish Ingolf-Expedition danishingolfexpe0506ingo Year: 1916 HYDROIDA 6l distinct main ring of nematocysts. On the other hand, there is round the polyp body, at its base, a distinctive girdle of large stinging cells. Otherwise, the colony has no particular stinging organs. The gonophores are styloid. The male gonophores have two chambers with a well marked accumulation of stinging cells distally, and are densely clustered on short stems perpendicularly placed on the trunk. Female gonophores are unknown. Material: The Faroe
Archive image from page 68 of The Danish Ingolf-Expedition (1916). The Danish Ingolf-Expedition danishingolfexpe0506ingo Year: 1916 HYDROIDA 6l distinct main ring of nematocysts. On the other hand, there is round the polyp body, at its base, a distinctive girdle of large stinging cells. Otherwise, the colony has no particular stinging organs. The gonophores are styloid. The male gonophores have two chambers with a well marked accumulation of stinging cells distally, and are densely clustered on short stems perpendicularly placed on the trunk. Female gonophores are unknown. Material: The Faroe Islands: Traugisvaag, on roots of Laminaria. The species was first described by Wright (1859) by the name of Eudendrium arbuscula from the Firth of Forth. However, another Eudendrium had been previously described by d'Orbigny 200 m. .....600m. ._ ....looom. 2000m. Text-fig. T. The occurence of Eudendrium Wrighti • and Eudendrium annulatum ▲ in the Northern Atlantic. (The vothed coastal parties denote a scattered occurence of Eudentium Wrighti according to the litterature). (1839) by the name of Tubularia arbuscula from Patagonia, and even though it will be questionable whether the species of d'Orbigny can be reidentified, we are no doubt right to follow Hartlaub (1905) and abandon the name of arbuscula for the northern species. Here we, therefore, adopt the denomination of Hartlaub, Eudendrium Wrighti. Eudendrmm Wrightiis an absolutely littoral species, the occurence of which seems to be restricted to the zone of the Laminaria. It occurs quite frequently from Bohuslan as far as towards the Trond- hjemfjord, and it is peculiar, therefore, that its female gonophores have not yet been pointed out. The species is quite common at the British Isles (s. the Text-fig. T), and it has also been recorded from the Mediterranean. Eudendrium Wrighti is, therefore, likely to be characterized as an Atlantic species of southern character, which is able to penetrate into the northern sea
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