. The Danish Ingolf-Expedition. Scientific expeditions; Arctic Ocean. ZOANTHARIA Section III. Description of the Family Macrocneminae H add on &; VS hackle ton 1891. Genus Epizoaiitlius. Gray 1867. Macronemic Zoantharia with a single mesoglceal sphincter muscle. The body wall is incrusted. The ectoderm is usually continuous but may be discontinuous; cell-islets and lacunae often in the mesoglcea. Dioecious polyps connected by ceenenchyme, which may be band-like, incrusting or greatly reduced, as in the free forms. As H add on and Shackleton have given a good diagnosis of the genu
. The Danish Ingolf-Expedition. Scientific expeditions; Arctic Ocean. ZOANTHARIA Section III. Description of the Family Macrocneminae H add on &; VS hackle ton 1891. Genus Epizoaiitlius. Gray 1867. Macronemic Zoantharia with a single mesoglceal sphincter muscle. The body wall is incrusted. The ectoderm is usually continuous but may be discontinuous; cell-islets and lacunae often in the mesoglcea. Dioecious polyps connected by ceenenchyme, which may be band-like, incrusting or greatly reduced, as in the free forms. As H add on and Shackleton have given a good diagnosis of the genus, I have used it in the main here. Of the n Epizoanthus species described here 4 are new: lindahli, danielsseni, beercnislandicus and koraii. E. incrustalus and pagurupliilus have previously been described in detail by Had don and S hackle ton (1891) but their description needs supplementing on several points. Regarding E. norvegicus these authors also give some anatomical information and show that Mardcel erdmanni Dan. is an Epizoanthus-species. The other species are described entirely from outer appearance or the anatomical description is so bad, that it cannot be used for a characterization of the species. Four of the species E. incrustalus. paguripliilus, lindahli and koreni have been dredged by the Ingolf-Expedition. Synopsis of the Epizoantli«j-species described here A. Species with carcincecium a. Without ventral polyp. Ectoderm of the body wall continuous. b. The capitular region of the polyps in the contracted state truncate, disc-like, number of mesenteries 32—42 incrustatus. bb. The capitular region of the polyps in the contracted state not truncate, not disc-like, number of mesenteries about 46 abyssoriun. aa. With ventral polyp. The ectoderm of the body wall discontinuous, except in the capitular region; number of mesenteries 64—80 paguriphilus. B. Species without carcincecium a. The ectoderm of the body wall in the polyp discontinuous norvegicus. aa. The ect
Size: 1884px × 1327px
Photo credit: © Central Historic Books / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, booksubjectscienti, bookyear1913
