Pennatulida. 



By 



Hector F. E. Jungersen. 



In the present treatise an acconnt is given, not only of the PennatnHds bronght home b}- the singolfs, 

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

 the adjoining regions which were investigated afterwards. Thns 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 imder 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; finallv' it 

 includes also the material sent to our museum from Mr. J 6ns son, district physician on the Vestman- 

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



Our knowledge of the PennatnHds 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 elngolf;. 

 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 m)- best 

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

 J. Grieg. I ha\-e 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 expeditions of the . Porcupines, the «Tritouj, 

 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° Eat. N. and to the meridian 

 of Cape Farewell. This revision, as wnll 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. I 



