74 NATURAL HISTORY OF 



lous coralline wrinkled like the windpipe/' and states 

 that " it is found in great plenty near the opening of 

 the Thames, adhering to other marine bodies, and 

 often to the bottoms of ships." " I have," says he, 

 " often received it with the animals alive in sea-water, 

 in which state it affords a most agreeable scene ; the 

 top of each tube bearing a bright crimson-coloured 

 polyp, equal in richness to the Guernsey Lily, all the 

 animals displaying their claws or tentacula at the 

 same time, with surprising agility/' The stem is 

 flexible, and would appear to be to some extent under 

 the control of the polyp. Mr. Paterson, of Belfast, 

 says, " that in a specimen obtained by him he observed 

 it coiling itself up, uncoiling, stretching, twisting, 

 knotting itself in a way that resembled the Gordius 

 aquaticus." * 



Dr. Johnston, writing of the form T. coronata, con- 

 sidered the appearance of the polyps when all displayed 

 as a very interesting and pretty spectacle, equalled by 

 no other species he had seen ; the crimson heads 

 contrasting finely with the white polypidoms, especially 

 when loaded with the gonophores, which pullulate 

 from the inner side of the base of the inferior tentacula, 

 each separate gonophore being of a roundish or oval 

 shape, having a dark red cylindrical centre.^' ("British 

 Zoophytes,'^ 1st edit., 116.) 



3. T. SIMPLEX, Alder. 



T. Dumortierii (G.J., Aid., D.L., McA.). 



Hab. : Cullercoats (Aid.), Berwick Bay {G. J.), Oban 

 {T.E.). Height2— 21 in. 



This is a deep-water species. 



Dr. Johnston, who is followed by Dr. Landsborough, 



* Landsborough, " Zoophytes," 118. 



