13 



TUBULAR! A, Linnams. 

 Generic Character: Polypidom rooted, more or less planf- 

 like, horny, tubular; no cells. The polypes protruding at 

 the end of the branches, and not retractile. The head is 

 crested with o»e or two rows of tentacula. 



* -Tubes undivided. 



OATEN-PIPE CORALLINE. Tubular ia Indivisa. Tubes 

 clustered, simple, cylindrical, narrowed and interwoven at 

 the base. The head is clustered with one or two rows of 

 tentacula. 



Adianti aurei minimi facie planta Marina. Ray's Synop., 

 vol. 1, p. 31., no, 4. Remarkable sea plant, Lhwyd's Phil. 

 Trans, Tubular Coralline, like oaten pipes, Ellis' Corallines, 

 p. 31, pi. 16, fig. c. Tubularia indivisa, Lamouroux's Cor. 

 Flex., p. 230. Blumenbach's Man., p. 272, Turton's Lin., 

 vol. 4, p. 666. Stewart's Elem., vol. 2, p. 437. Flem. Brit. 

 An., p. 552. Johnston's British Zoophytes, p. 113, pi. 3, 

 figs. 1 and 2. Solander and Ellis' Zooph., p. 31. 



Hab. Attached to stones from deep water. Polperro, 

 West Combe, Lansallos ; rare. On the Owinges rocks, near 

 Mevagissey, common, Mr Peach. 



This, in particular situations, is very common, as on the 

 Gwinges rocks near Gorran and the neighbourhood, and in 

 deep water about three miles from the shore, Polperro. 

 The tubes are simple from the roots to the terminations, 

 The height of the tubes varies from two to fourteen inches, 

 and they are about the tenth of an inch in diameter. At the 

 roots they are frequently twisted and convoluted on each 

 other, but they soon rise simple and undivided. The centre 

 is filled with a soft granular pulp which passes up each tube 

 and terminates in the polypes. The polype heads are red and 

 incapable of being withdrawn into the tubes. The mouth is 

 produced into a conical elevation, and around is a circle of 

 red tentacula; inferior to this circle is another in which the 

 tentacula are much longer than in the one above. Below this 

 last circle, are produced the reproductive gemmules. The 

 young sometimes pullulate from this part, and when sepa- 

 rated from the parent, they travel to some other spot by- 

 means of their tentacula, till having selected a proper situa- 

 tion, they fix themselves by their base. From this spot they 

 never afterwards move; but a horny ring is formed round 

 the base, and increasing as the polypidom grows, forms Uie 

 tubes of the perfect animal. Sometimes, a few specimens 

 are found sparingly branched. 



WINDPIPE CORALLINE. T. Larynx, Tubes clustered, 

 ringed at intervals; polypes with a double row of tentacula. 



B 



