208 NOTES ON SAGARTIID^ AND ZOANTHID^ FROM PLYMOUTH. 



In the Millbay Docks it lives upon the agglomerated masses of 

 Ascidiclla aspersa, which grow on the piles, valves of Mytilus, and upon 

 one another, together with various Polyzoa, Obelia longissinia, Sycon 

 coronata, and colonies of Botryllus. 



Height of column usually 5 or 6 mm., but I have seen adults when 

 elongated as much as 10 mm. in height. 



Column smooth, dull green, striped with orange-yellow. 



Disk varies from semi-transparent greenish brown to dark green, 

 with varying short lines or spots of greenish yellow at the base of the 

 tentacles, and frequently one white radius. 



Mouth generally raised on a cone. 



Tentacles in multiples of twelve, 24, 36, 48, and 60 being observed in 

 various individuals. Dull, semi-transparent, greenish in colour, or 

 tinged with yellow or pink, sometimes a faint white ring near 

 the tip. 



Many of the conditions mentioned by G. C. Davenport, in " Varia- 

 tion in the stripes of aS*. lucice," are observable here. 



The anemone was in active subdivision on Drake's Island in early 

 December, 1907, specimens being found with 4, 6, and 8 stripes more 

 frequently than those with the normal 12. 



Two large individuals, found on the same stone in Eum Bay, had the 

 unusual number of 34 stripes, arranged in 17 pairs. One of these 

 subsequently divided, and each of the resulting individuals had 

 17 stripes (8^ pairs). 



Several small ones from Millbay were entirely without stripes. 



I have observed one of these anemones seize and retain an amphipod 

 of the same length as its own tentacles. 



Sagartia coccinea, Gosse. 



This species was named coccinea by Gosse, believing it to be 

 identical with Actinia coccinea, Mtiller, Zool. Danica, 1776. Carlgren 

 (1893) has shown, however, that the species really described by 

 Miiller was the Stomphia churchia; of Gosse, which must hence be 

 Stomphia coccinea (Miiller), and the present species Sagartia coccinea 

 Gosse. 



It is to be found in abundance in the Cattewater, its presence there 

 being in all probability due to trawl refuse, the majority being 

 attached to the ascidian Polycarpa pomaria, and associated with other 

 animals from the trawling grounds. 



It however readily attaches itself to wood, leather, dead leaves, 

 fucoids, and any other available material. 



