. The Danish Ingolf-Expedition. Scientific expeditions; Arctic Ocean. HYDROIDA 25 Tubularia indivisa being globular, and accordingly broadly rounded in the distal part, while that of Tubularia regalis is oval and showing an attempt to be pointed in the distal part. Tubularia indivisa has a very wide distribution. Its main occurrence in the boreal seas is bound to the middle and deeper parts of the littoral region and to the upper part of the deep sea region. From the cold area we find the species but once recorded, by Grieg (1914). After the examination of his specimens I cannot confirm this r
. The Danish Ingolf-Expedition. Scientific expeditions; Arctic Ocean. HYDROIDA 25 Tubularia indivisa being globular, and accordingly broadly rounded in the distal part, while that of Tubularia regalis is oval and showing an attempt to be pointed in the distal part. Tubularia indivisa has a very wide distribution. Its main occurrence in the boreal seas is bound to the middle and deeper parts of the littoral region and to the upper part of the deep sea region. From the cold area we find the species but once recorded, by Grieg (1914). After the examination of his specimens I cannot confirm this record; the specimens consisting only of hydrocauli without polyps, more probably belong to another species of Tubularia inhabiting the deep sea. To judge from literature, Tubularia indivisa penetrates rather far into the shallower parts of the Arctic regions, where it is recorded even from the New Siberia Islands (Jaderholm 1908). How- ever, as appears from what is stated above, there is a possibility that some of the Arctic individuals. Text-fig. D. The distribution of Tubularia indivisa in the Northern Atlantic. are in fact to be referred to Tubularia regalis. — The species also penetrates far towards the south. It is recorded by Fewkes (1881) even from the Caribbean Sea, by A11 man (1877) from between Cuba and Florida, and by Billard (1906) from the west coast of Africa. As Tubularia indivisa is recorded at the same time both from the East and the West coast of North America, it must be characterized as a circumpolar or rather "circumborear (Nordgaard 1912) species. Tubularia regalis Boeck. i860 Tubularia regalis Boeck, Videnskabsselskabets Forhandlitiger for 1859. 1899 - Bonuevie, Norske Nordhavs-Expeditiou, p. 24. Colonies whose long, dark-brown-coloured hydrocauli are in the lower parts twisted together. The stem is covered with a vigorous periderm, but shows no rings nor wrinkles. No collar is formed The Ingolf-Expedition. V. 6. 4. Please note that th
Size: 2055px × 1216px
Photo credit: © Central Historic Books / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, booksubjectscientificexpedition
