372 * P- Kramp. 



Lafoëa gracillima Bonnevie 1899 [13] p. 64. Tab. V, Fig. 2 a. 



„ „ Sæmundsson 1902 [54] ,, 60. 



„ „ Broch 1906 [16] „ 37. Textfig.5. 



„ „ Jäderholm 1908 [34] „ 13. PI. II, Fig. 15. 



„ „ „ 1909 [35] „ 74. Taf. VII, Fig. 6— 8. 



„ „ Broch 1909 [17] „ 156 & 208. Textfig. 17, 18. 



„ „ Sæmundsson 1911 [55] „ 84. 



Rather numerous at St. 71a. The largest colony is 2.5 cm. high. 



There have been divided opinions as to the independence of 

 this species from L. friiticosa; whilst some authors maintain, that 

 the two species are always easily distinguished, others hold that 

 they grade ел'еп1у into one another. The specimens of L. gracillima 

 from the Danmark Expedition are not difficult to distinguish from 

 L. friiticosa. Several have pointed out, that neither the number nor 

 the form of the windings on the hydrothecal stalk is a reliable 

 mark of recognition. In the present material I have found even 7 

 spiral windings on the pedicels. 



Hab.: St. 71a. 



Depth: 30—40 m. 



Geographical distribution: Arctic: circumpolar. — Cos- 

 mopolitan. 



Lafoëa grandis Hincks. 

 Plate XX, fig. 1. 



„ symmetrica Sæmundsson 1911 [55] „ 83. 



Several small and large colonies, the largest (St. 96) 5 cm. high. 



In descriptions of this species stress is generally laid on the 

 symmetrical form of the hydrotheca; this character does not corres- 

 pond with the specimens of the Danmark Expedition, on which all 

 the hydrothecae show an obliquity or bending to one or the other 

 side (not always away from the branch as in L. fruticosa); this 

 obliquity is rather slight on some hydrothecae but on most of them 

 it is very obvious, in the same way as in L. fruticosa. The speci- 

 mens correspond in every way to Hincks' original description and 



