,, ZOANTHARIA 



tlie oesophageal region were fairly well developed. The longitudinal muscles on the niaero-raeseuteries 

 are fairly strong but form few folds. The parieto-basilar muscles are very weak and narrow. The 

 distribution of the longitudinal and parieto-basilar muscles on the body-wall is quite distinct. 



The filaments have the usual structure. The nematocysts of the glandular tract are 34 — 41 ji 

 long and 10 — 12 p broad (very seldom only 9/z broad). They are uniformly broad and very common 

 and there is also a frequent occurrence of thick-walled capsules with distinct basal part to the spiral 

 thread (length 22—26//). 



The sexual organs were undeveloped in the two specimens sectioned in the sexual region. 



Epizoanthus glacialis Dan. 



PI. 2 fig. 1—5, PI. 4 fig. 2, 6, 7. 



Epizoanthus glacialis 11. sp. Danielssen Norw. Atl. Exp. Actinida p. 129, Tab. 6 figs. 7—9, Tab. 24 



figs. 5 — 8, Tab. 25 figs. 1 — 3 pro parte. 

 Palythoa norvegica Kor. & Dan. Mareuzeller K. Acad. Wiss. Wien 3 1886. IV p. 16 vox Jan. mayeni. 



Occurrence: 68°2i'N., io°4o'E. 836111. Sabulous clay. Bott. temp. — 07°. Norw. North Atl. 

 Ex. 1876, 29. 6. St. 164. many specimens Bergen M. 



7i°25'N., i5°4i'E. 1134111. Clay. Bott. temp. — 1-0°. North Atl. Ex. 1877. 17.7 St. 200. a few 

 specimens B. M. 



Altenfjord 80 fins. clay. June 1890. J agerski old. some colonies Upsala M., R. M. 



Oxfjord Finmarken. Love 11 1 sp. R. M. 



Greenland Umauak 250 fms. clay Amundsen 15.8. i860, several specimens R. M. 



Greenland Umanak 397 fms. light clay. Ingegerd and Gladans Ex. J. Liudahl 13.7. 1871. 2 

 specimens R. M. 



Greenland off Umanakfjord 122 fms. hard light grayish clay. Ingegerd and Gladans Ex. J. Liu- 

 dahl 14.7. 1871. several large colonies R. M. 



Greenland 7o°53'N., 52 18' W. 397 fms. light clay. Bott. temp. —2-8° (27 F.) C. Ny strom 

 Upsala M. 



Jan Mayen 200111. Austrian polar stations 1882 — 1883. 1 colony: var Jan mayeni. 



Dimensions. The column measures about 2'ocni. in height, 06cm. in breadth at the base, 

 06 — 07cm. broad at the uppermost extremity and 0-40111. broad at the middle (Danielssen). Spec- 

 imens from Umanak fjord, which were considerably larger than the specimens of E. glacialis I have 

 seen from the Norwegian North Atlantic Expedition, had in the preserved state a length of about 

 i-8 cm. and a breadth of o-6 cm., the smallest breadth being 04 cm. 



Colour. The incrusted portion of the body is greenish-yellow but when the animal is extended 

 almost yellow, having a somewhat greenish play of colour at the base only. The oral disc is faint 

 brick-red with darker folds round the oral aperture. The tentacles are more intensely red than the 

 oral disc, but are somewhat paler in colour at the extremities (Danielssen). In alcohol dirty 

 yellowish. 



