132 CATALOGUE OF THE ZOOPHYTES OF 



Order. ASTEROIDA, Johnston. 



Fam. PENNATULID^, Fleming. 



19. PENNATULA, Linnceus. 

 1. P. phosphorea, Linn. 



Johns. Brit. Zooph., 157, wood-cut 36. 

 From tlie coralline zone and deep water; frequent. Often 

 brought in on the fishing lines at Cullercoats. 



20. VIRGULARIA, LamarcJc. 

 1. V. mirabilis, Lin7i. 



Johns. Brit. Zooph., 161, t. xxx. 

 Dredged off the Northumberland coast by R. Mc Andrew, 

 Esq., in 1851. 



Family. ALCYONIAD^, Johnston. 



21. ALCYONIUM, Linnceus. 



1. A. DiGiTATUM, Linn. 



Johns. Brit. Zooph., 174, t. xxxiv. 

 From beyond low-water mark to deep water, on sliells, 

 stones, and other submerged bodies ; very common. 

 The orange variety frequently occurs, sometimes on the same 

 stone or shell with the common kind. As no intermediate stages 

 have ever been found, there is a probability that this may prove 

 to be a distinct sj^ecies. Large specimens of the orange variety 

 are generally divided into more numerous lobes or digitations, 

 the substance is more coriaceous, and the spicula are somewhat 

 stouter than in the other kind. The difference of colour also 

 extends to the interior. Is the A. glomeratum of Hassall distinct 

 from this ? Another variety, almost white, spreading in a thin 

 layer over other substances, and with the polypes more distant 

 than usual, is sometimes met with. The margin of this is very 

 much attenuated, and spreads for a considerable distance without 

 polypes, which is not the usual character of young encrusting 

 individuals of A. th'gitatum. 



