42 BRITISH TUNICATA. 



pale reddish or yellowish white. Individuals (fig. 108, 

 b) orange red. Systems not distinctly circumscribed." 

 (Forbes <$ Hanleij.} " Individuals for the most part 

 oval, varying from saffron to red in colour, each being 

 doubly perforated with small crimson orifices having 

 somewhat swollen margins similarly coloured and with 

 six distinct radii forming as it were so many teeth 

 around them." (Gaertner, transl.) 



Diameter of the mass from one-half to three-quarters 

 of an inch (12-18 mm.). 



Halt. On Fucm palmatus (Gaertner}. Investing 

 Fucus xi'rrafnx (Thompson). On roots of Laminaria 

 digitata (Cocks). On the test of Cijntlda mamillaris 

 (Jeffreys). On the carapace of Maia 

 (Norman). 



FIG. 108. Distoma variolosum. (After Gaertner, loc. cit.) a, a colony, 

 natural size ; b, a single individual, enlarged. 



ENGLAND. Lulworth Cove, Dorset (Jeffreys). Coast 

 of Cornwall (Gaertner). Falmouth, Cornwall (Cocks). 

 SCOTLAND. Firth of Clyde (Norman). 

 IRELAND. Belfast Bay, Antrim (Thompson}. 

 CHANNEL ISLANDS. Guernsey (Norman). 

 First record. Gaertner, 1774. 



This species was described in Vol. II of the present 

 monograph (p. 1-38) as a Tlujlacinin. It is however 

 the type species of the genus Dixtoma, and could not 

 be removed to a genus more recently founded and 

 differing moreover in having the apertures 4-lobed.] 



