46 POPULAR HISTORY OF THE AQUARIUM. 



tennina " grows in clusters in the sand, or on stones lying in 

 the sand, rooted together by numerous fibres matted with a 

 mixture of broken shells and sand, pretty generally distri- 

 buted. We have not found it on the Ayrshire coast, if it 

 is distinct from A. ramosa. It has however been got by the 

 Eev. Mr. Urquhart, at Portpatrick ; and we have remarkably 

 fine specimens from Dr. Beverley Morris, from the coast of 

 Yorkshire; from Dr. Scouler, from Dublin Bay; and from 

 Major Martin, from Lough S willy. These last were very 

 handsome, but the stems smaller and more compact than 

 usual, and the branchlets shorter." — Landshorough. 



It often grows to the height of a foot, and it appears 

 jointed in rings like the long antennae of the Lobster. " Each 

 articulation is surrounded by short capillary branches, which 

 when magnified have the appearance of sickles, and bend 

 towards the main stem. Along the inside of these are placed 

 minute sockets, which support small open denticles (cells) 

 of a cup-shape, which are of so tender a nature that they 

 are scarcely visible but in recent specimens. Between the 

 minute hair-like branches we have observed, on some speci- 

 mens, small egg-shaped vesicles, fixed on footstalks, with 

 their openings, or mouths, on the side of the top of each, 

 looking towards the middle stem." — Mils, 



