HYDROIDA 



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 Levinsen (1893) as AinaUhaea islandica, 

 prove to belong to Corymorpha groenlandica (Allman). 



Corymorpha groenlandica (Allman) Broch. 

 1876. MoiwcciuIhs grooilandica^ Allman, Diagnoses of new Genera and Species of Hydroida, p. 257, 



PI. IX, Fig. 7—8. 

 1893. AmalthcTa islandica -j- Monocaulns groenlandica^ Levinsen, Meduser, Ctenophorer og Hydroider 



fra Gronlands Vestkyst, p. 151. 



_„__ _6oom. 



Test-fig. H. Finds of Corymorpha glacialis iu the Northern Atlantic. 



1899 Lainpra atlautica + Laiiipra pitipurca, 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 — arctica, Jaderholm, Hydroiden, p. 41, Taf. I Fig. 9—10. 

 1909 Corymorpha spitzhcrgensis, Broch, Die Hydroiden der arktischen Meere, p. 140. 

 igij _ gronilaiidica, Broch, Hydroiduntersuchungen IV, p. n. 



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

 it is attached to the substratum by numerous rhizoids, and is gradually tapering upwards till close 

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



5 



The Ingolf-E.\peditian. V. 6. 



