Report on the Hj'droids. *^65 



Eudeudriiim tenelluni Allman. 



Eiidendrium tenellnm Allman 1877 [8] p. 8. PI. IV, (igs. 8, 1. 



,, Markt.-Turn. 1895 [43] p. 39(5. 



,. ,. Bonnevie 1898 [12] ,. 7. PI. I, Fig. 6. 



„ ,, Jäderholm 1909 [35] ,. 54. Tat. IV, Fig. 5— 6. 



Small colonies, partly with female gonophores, rather often oc- 

 cur on hydroids etc. from several stations. The colour of the chitin 

 is very variable, light or dark yellowish-brown. 



The female gonophores agree with Boxnevie's description (12). 



Miss Bonnevie refers her specimens to this species " um 



nicht unnöthigerweise die Zahl der Arten zu mehren, ob- 

 gleich der von ihm [Allm.] beschriebene Hydrocaulus nicht sehr 



charakteristisch ist ". This might be a somewhat unfortunate 



method, for if the species are not identical, such an identification 

 of them will lead to incorrect statements regarding their geographical 

 distribution. In this case, certainly, no harm has been done, as 

 Marktanner-Turxeretscher (43) has already taken up and described 

 Allmann's species, still without knowing the gonophores; it seems 

 that Bonnevie has not observed this. 



The female gonophores were found bj^ Bonnevie (12), the male 

 by Jäderholm (35). 



Hab.: St. 63, 68 a, 71a, 72 c, 94. 



Depth: 15 — 60 m., most frequent at 40 — 60 m. 



Geographical distribution: Arctic: Greenland, Spitzbergen, 

 Norway. — West coast of Europe, West Indies. 



Not earlier known from East Greenland. 



Subordo Thecaphora. 



Tribus Thecaphora conica Broch 1909. 



Fam. Haleciidae. 



Genus Halecuim Oken. 



Halecium muricatiim (Ellis Л Solander) Johnston. 



Plate XXI, fig. 1. 



Sertularia muricata Ellis & Solander 1786 [21] p. 59. Tab. 7, Fig. 3, 4. 

 Thoa ,. Johnston 1838 [31] ,. 121. PI. VII, Fig. 3, 4. 



Halecium inuricatum ,. 1847 [32] ,. 60. PI. IX, Fig. 3, 4. 



Hincks 1868 [28] ,. 223. PI. 43, fig. 1. 



„ „ Levinsen 1892 [37] ,. 23. Tab. I, Fig, 20, 



22—27. 



