HYDROlDA 



33 



layers, as is seen (Text-fig. H) from the finds to the north east of the Faroe Islands and on the south 

 east coast of Iceland (Broch 1903). As new localities must be added Northern Iceland (0fjord). On 

 the other hand, the specimens from Davis Strait, recorded by I^evinsen (1893) as AmaUhaea islandica, 

 prove to belong to Corymorpha groenlandica (A 11m an). 



Corymorpha groenlandica (Allman) Broch. 

 1S76. Moiiocaulus grociiliDidica^ Allman, Diagnoses of new Genera and Species of Hydroida, p. 257, 



PL IX, Fig. 7—8. 

 1893. AiiiuUlura islaiidica \- Moiiocaulus gronilaitdica, Ivcvinsen, Meduser, Ctenophorer og Hydroider 



fra Gronlands Vestkyst, p. 151. 



. _ - 600m. 



Text-fig. H. Finds of Corymorpha g/acialis in tlie Northern Atlantic. 



1899 Laiiipra atlaiitica -\- Lauipra purpurea, Bonnevie, Nor.ske Nordhavs-Expedition, p. 20, Tab. II 



Fig. 4, Tab. Ill Fig. i. 

 1903 — socia, Swenander, Uber die athecaten Hydroiden des Drontheimsfjordes, p. 6, Taf. 



Fig- 1—3- 

 1909 — arcfica, Jiiderholm, Hjdroiden, p. 41, Taf. I Fig. 9—10. 

 1909 Coryiiiorp/ia spitzbcrgensis, Broch, Die Hydroiden der arktischen Meere, p. 140. 

 1915 — groenlandica, Broch, Hydroiduntersuchungen IV, p. 11. 



The hydrocaulu.s, when extended, attains a height of 100 mm; it is widest at the base, where 

 it is attached to the .snb.stralum liy numerous rhizoids, and is gradually tapering upwards till close 

 below the polyp where the width reaches its minimuni. The polyp has a wide base, surrounded by 



The Iiigolf-ExpoJitiun. V, 6. ^ 



