212 LAFOEID^E. 



definite plan, and form regular, longitudinal rows. In 

 Lafoea they are free throughout their entire length, and 

 patent ; in Salacia they are in great part adnate. 



Sars has pointed out that in the present genus the hy- 

 drothecae are not separated from the stem by any constric- 

 tion, and that the polypites when contracted can withdraw 

 themselves wholly from them into the tube of the stem. 



S. ABIETINA, Sars. 



CAMPANULARIA ABIETINA, Sars, Eeise i Lofoten og Finm., Nyt Magaz. f. 



Naturvid. 1850, 139. 

 GRAMMARIA ROBUSTA (young), Stimpson, Marine Invert, of Grand Manan, 9, 



tab. i. fig. 3. 

 ,, RAMOSA, Alder, Cat. of North, and Durh. Zooph. in Trans. Tynes. 



F. C. iii. 130, pi. iv. figs. 1-4 ; v. 239, 240. 



ABIETINA, Sars, Bemrcrkn. over fire .Norske Hydroider, Viden- 

 skabs. Forhandl. 1862. 



Plate XLI. fig. 3. 



STEM stout, horn-coloured, irregularly branched, the bran- 

 ches constricted at the base; HYDROTHEC/E disposed in 

 four (or five) longitudinal rows, those of the adjacent 

 rows alternating, those of the opposite on a line with 

 each other, free above, and bending outwards to a dis- 

 tance nearly equalling the width of the stem, with an 

 even margin; GONOTHEC^E unknown; POLYPITES of a 

 sulphur-colour, with 18-20 tentacles. 



Height, in fine specimens, nearly 4 inches. 



THIS species has been fully investigated by Sars, who has 

 obtained it abundantly on the Norwegian coasts, and has 

 had ample opportunity of studying it in a living state. 

 He has given a detailed account of the polypites, which 

 are of the same type as those of Lafoea dumosa. " They 

 are cylindrical, very slender and tall, so that when ex- 

 tended they only occupy a third of the diameter of the 



