COASTS VISITED BY THE ARCTIC EXPEDITION. 609 



80°. The strike of these Carboniferous Limestones is towards 

 Spitzbergen and Franz-Joseph Land, whence a rich fauna of this 

 age is known and described by Toula. 



Rocks of this age were not determined eastwards of Eobeson 

 Channel or on the extreme northern shores of Greenland as far as 

 Cape May. Neither did Lieut. Aldrich obtain any evidence of such 

 (according to the rocks brought home) during his memorable sledge 

 journey to the westward and round Cape Columbia to Cape Alfred 

 Ernest. Looking at the collection obtained from Feilden Isthmus, 

 composed chiefly of Brachiopoda and Polyzoa, and the mode of their 

 occurrence, I should be disposed to regard it as a highly typical 

 one, and as indicating the presence of Carboniferous strata, which 

 upon careful research and examination would yield a large fauna. 

 The present collection was obtained under great difficulties, and is 

 therefore by no means numerically representative *. Four species of 

 Actinozoa, four or five genera and twelve species of Polyzoa, and five 

 genera and twelve species of Brachiopoda occur in the collection ; 

 but there were no Lamellibranchiata in either the Carboniferous or 

 the Silurian series brought home. 



Class ACTINOZOA. 



Group Tadtjlata. 



Genus Syringopora, Goldfuss, 1826. 



Syringopora, sp. 



This universally distributed genus of corals in the Carboniferous 

 rocks of Europe and America is only represented in the Polar col- 

 lection by two specimens. 



The Halysitinse are a variable family, and unless the species are 

 well preserved they are better left undetermined. Syringopora is 

 ubiquitous, the abundant forms in Britain being S. ramulosa, S, 

 reticulata, and S. geniculata. Keyseiiing, Bronn, and D'Orbigny have 

 described this genus under the name of Harmodites. Twelve spe- 

 cies are known in the Devonian rocks of North America and Canada, 

 three in the Carboniferous of North America, and twelve in Europe, 

 /S. reticulata being the species common to the two continents ; eight 

 species occur in the Carboniferous rocks of Russia (four of these in 

 the Ural chain), five in Belgium, and three in Prance, 8. ramulosa, 

 8. reticulata, and JS. geniculata being common to all European 

 areas. 



Log. Peilden Isthmus, lat. 82° 43'. 



* It is much to be regretted that by far the greater portion of the Carbo- 

 niferous collection made by Captain Feilden at Joseph-Henry Peninsula during 

 the sledge journey wa9 left behind, owing to the inability of the crew to drag the 

 increased weight on the sledge. Considerably more than one half were 

 abandoned ; only tbe few secured and brought away by the energetic per- 

 sistency of the weakened explorers, and noticed in this communication, were 

 saved. 



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