160 CATALOGUE OF ADDITIONS TO, AND ALTERATIONS 



they are really nrnch alike. Hincks, in his introduction, at p_ 

 XXV of his " History of the British Hydroid Zoophytes,'"' speak- 

 ing about the swimming-bell oi Iledti-ics sa.js, "Its margin is 

 furnished with a larger or smaller number of tentacles, and in 

 many cases with a series of small sacs, in which one or more 

 refractile spherules are enclosed. The latter are in all probability 

 simple organs of sense, but of what nature we are not in a posi- 

 tion to determine. Their function has been supposed to be 

 auditory, but the conjecture is hardly borne out by an extended 

 investigation of the structure." 



A nice iigure of the sac of a Medusa, is given in a woodcut, fig. 

 12, and it is really much like the " sac " on the margin of the 

 Lucernaria. I hope this long story will be excused ; I am so 

 anxious to induce others to try to find out the true history of 

 things, and at all times, if possible, to add my mite. 



Other species of Lucernaria have been met with on the Cornish 

 coast : as I have no work to refer to, and never studied them, I 

 am unwilling to say anything more about them. 



Tribe L— ASTRGEACEA. 



Genus, Actinoloba. — Blainville. 



1 — Actinoloba Dianthus. — Gosse, Brit. Sea Anemones, p. 12, 

 fig. 1. 



Actinia Dianthus. — Couch, Corn. Faun., p. 79. 



This very beautiful form is not rare on the Cornish coast. 

 Couch found it at Polperro, Talland, Lantivet, and about Mounts 

 Bay. Off the Deadman. (C.W.P.) Falmouth. (Cocks.) 



It is wide-spread, and very abundant in Orkney and Shetland, 

 and the north of Scotland, especially in caves in the clift's into 

 which the tide fiows. There they congregate, of all sizes and 

 colours by thousands, carpeting the sides of the caves and 

 beautifying them with their fiower-like forms and lovely colours. 

 I have inserted this from not finding it noticed by Grosse that 

 Couch knew it as Cornish. 



Genus, Sagartia. — Gosse. 



Sagartia Cocinea. — Mailer. 



Actinia Cocinea.— ITw/fcr, Zoo. Der. Pro. 231, No. 2792. 



