Pennatulida. 



By 



Hector F. E. Jungersen. 



In the present treatise an account is given, not only of the Pennatulids brought home by the Ingolf , 

 but also of material in later collections from within the territory of the Ingolf-Expedition and from 

 the adjoining regions which were investigated afterwards. Thus it comprehends the results from 

 the surveying cruises of the Diana at Iceland and the Faeroe Islands, from the expedition to East- 

 Greenland by Messrs. Amdrup and Hartz, from the participation of cand. mag. Ad. Jensen in the 

 investigation of the «Michael Sars in the North Atlantic during the summer of 1902 under the 

 direction of Dr. Hjort, and from the cruise of the «Thor», the steamer for the international investi- 

 gations of the sea, during the summer of 1903 under the direction of Dr. J oh. Schmidt; finally it 

 includes also the material sent to our museum from Mr. Jonsson, district physician on the Yestman- 

 Islauds, and by Mr. Miiller, agent in Thorshavu. 



Our knowledge of the Pennatulids rests in several respects on a rather slight footing; this 

 holds good also for the apparently so well examined Scandinavian forms, in spite of the numerous and 

 beautiful treatises which have appeared from Norwegian scientists. I have tried personally therefore 

 to examine all the forms that have hitherto been described from the coast-regions of Scandinavia, 

 as well as the forms from the territory adjoining the one which was investigated by the Ingolf . 

 For this purpose I have examined the collections in Christiania, Bergen and Stockholm; from the 

 museums in these towns I have received later all that I wished to examine more closely and to 

 compare with our own material here in Copenhagen; for this great liberality I beg to offer my best 

 thanks to Professors R. Collett and Hj. Theel, and to Conservators Dr. A. Appellof and Mr. 

 J. Grieg. I have further had the opportunity at the British Museum of bringing into the comparison 

 part of the material of the Challenger-Expedition; on the other hand, I have searched in vain in 

 several English museums for the Pennatulids from the expeditious of the Porcupine , the Triton , 

 and the Knight-Errant*. The result of my endeavours has thus been a revision of the Pennatulid- 

 fauna of a large sea-territory, viz. the Polar Sea between Europe and Greenland, the sea to the 

 West of Greenland, and the northern part of the Atlantic down to 55 Lat. N. and to the meridian 

 of Cape Farewell. This revision, as will be seen, has led to a somewhat new conception of several 

 species hitherto established; further, several forms have been added, of whose occurrence within 

 territory so far north we have hitherto known nothing, and could know nothing; of undescribed 

 species only two have been added. 



The Ingolf-Expedition. V. I. j 



