HYDROIDA 27 



recorded from Spitzbergen at the dcptli of only 38 111. (Rroch 1909). Evidence of its occurrence 

 in the Kara Sea is still wanting. From this locality a specimen is in hand, determined by Bergh 

 (1887) as Tnbidaria rcgalis. As a matter of fact, the specimen is a Corymorpha, probably a Cory- 

 Diorplia glacialis M. Sars. — A remarkable exception to the habitat stated is formed by the frequent 

 occurrence of the species in the Trondhjem Fjord, where it is found in abundance on the Lophohclia- 

 recfs. In spite of the luxuriant development which it attains in the Trondhjem Fjord, it must probably, 

 like Coiyi/iorpha grooilaiidica (Allman), Myriuflirla plirygia (I'^ibr i ci us), ^wd Stcgopotna plica lilc 

 (G. O. Sars), be accounted for as an arctic relict in this locality. 



Tubularia larynx Ellis et Solan der. 

 1786 Tubularia larynx^ Ellis et So Ian der, The Natural History of Many Curious and Uncommon 



Zoophytes, p. 31. 

 1864 — hnmilis^ Allman, Notes on Hydroida, p. 57 and 60. 



Colonies whose long polyp stems, generally unbranched and irregularly curved, are separated 

 quite down to the tangled network of basal tubes. The stems are covered with a fairly vigorous, but 

 colourless perisarc, which is irregularly wrinkled or more rarely quite smooth. The polyp wears a 

 basal whorl of up to 25 tentacles, attaining a length of 8 nun.; the numerous distal tentacles, 2 or 3 

 nun. long, are densely crowded round the orifice in a whorl consisting of several rows. 



The gonophores are euniedusoid, without radial canals, but with a rudimentary circular canal; 

 they are most frequently provided with three rudimentary tentacles. The gonophores are supported by 

 6—12 short blastostyles, which may be erect or hanging. The actinula larvae, when deliberated, show 

 filiform tentacles. 



Material: 



Iceland: Reykjavik. 



Gustsey ^lepth 4 fath. 



Keflavik - 15-1^ - 



F'axebugt three miles N 37 E Keflavik — 19,5 — 



Off Havnefjord — 25 — 



Stykkisholm — 20-30 - 



Skagi - 40 '"• 



Vestman Islands — 28 fath. 



The Faroe Islands : Andefjord 10—23 — 



The North Sea 6o°35' N., i°5o' W — 5° — 



The synonymy of the varying species has been thoroughly accounted for b)- Fenchel (1905). 

 He points out that, as is also maintained by Bonnevie (1899) and by Swenander (1903), Tubularia 

 coronata Abildgaard must be subsumed under Tubularia larynx. On the other hand, it is not plainly 

 seen whether he regards Tubularia Imuiilis Allman to be a peculiar .species. On a closer exami- 

 nation, indeed, the characters pointed out by Bonnevie (1899) as distinguishing marks, prove to 

 be of no particular svstematic importance. The wrinkling of the stem is strongly varying from 



4* 



