12 



HYDROIDA II 



Lafoea fruticosa M. Sars. 

 1851 Campanularia fruticosa, M. Sars, Beretning om en i Sommeren 1849 foretagen zoologisk Reise, 



p. 131, 138. 



1863 Lafoea fruticosa, M. Sars, Bemserkninger over fire norske Hydroider, p. 30. 

 1868 pocillum, Hincks, A History of the British Hydroid Zoophytes, p. 204, pi. 40, fig. 2. 



1874 grandis, Hincks, On deep-water Hydroida from Iceland, p. 147, pi. 6, figs. 1 2. 



1899 symmetrica, Bonnevie, Norske Nordhavs-Expedition, p. 64, pi. V, figs. 2 c and 4. 



The colonies are creeping, or form upright, irregular rhizocaulomes. The hydrothecse are cylin- 

 drical or narrowly bell-shaped, more or less asymmetrically developed or slightly curved, the one side 

 as a rule curving somewhat more markedly outwards than the other. The hydrothecse have as a rule 

 a slightly expanded basal part and a more or less outward curving opening margin, they are sharply 

 marked off from the stalk, which is of varying length, spirally turned, or less frequently divided into 

 rings. The stalk itself forms, in the upright colonies, an open angle of 45 80 with the mother tube. 



The gonothecse are gathered in hermaphroditic coppiniae, the tubes of which are as a rule 

 highly curved. The male gonothecse are wedged in among the female. 



Forma genuina: finely built colonies, always with asymmetrical, narrow hydrothecse, the stalk 

 forming an acute angle with the mother tube. 



Format raafo: coarsely built colonies with wide cylindrical to narrowly bell-shaped hydrothecse; hy- 

 drothecse often almost or entirely symmetrical, the stalk generally forming a more obtuse angle with 

 the mother tube. 



Material : 



Forma genuina: 

 "Ingolf" St. 34 

 - 86 



depth 55 fathoms 



76 

 no 



62 metres 

 - 835 



6 5 i7' N, 54 i7' W, 

 6 5 o 3 ,6' N, 2 3 47,6' W, 



- 87 6 5 o2, 3 ' N., 23 5 6,2' W, 

 "Thor" 6 5 5 2' N, 2 3 5 8' W, 



6i07' N., 9 3 o' W., 



Greenland: Egedesminde (no details noted) 



Pr0ven ( - ) 



Cape Tobin, depth 57 fathoms (East Greenland Expedition) 



Mouth of Hurry Inlet, 50 ( ) 



Iceland: Skjalfandi Bay, depth 28 fathoms 



9 miles N. 74 E. of Hornet, east coast of Iceland, 38 

 The Faroe Islands: 7 miles N. by E. of Myggenses, 57 



Forma grandis: 



"Ingolf St. 2 6 3 04 ; N., g22' W., depth 262 fathoms 5,5 

 . 4 6 4 o 7 ' N., iii 2 ' W., 257 2,5 



. 34 6 5 i/ N, 54 i 7 ' W, 55 



- 95 6 5 i 4 ' N, 3 o 39 ' W, - 752 2,1 



