288 HISTORY OF BRITISH ZOOPHYTES. 
a snake without the lower jaw,—in the place whereof is the 
entrance into the cell.” (H/Zis.) Dr. Johnston states that 
it is of a pale pink, or flesh-colour, or white. It is rare in 
Scotland ; and the specimens we have seen were white, and 
so were all that we have seen from England; but they may 
have been coloured in a fresh statee It is smooth and 
glossy, but the snake-like tube is marked all along by nu- 
merous annulations of a more opake aspect. Mrs. Gatty 
was the first to point these out to me; but they are very 
conspicuous in a figure of it with which I have been fa- 
voured by Mr. Busk, of Greenwich, whose forthcoming 
work on the Polyzoa is eagerly looked for. 
2. ANGUINARTA TRUNCATA, mihi. (Plate XVI. fig. 57.) 
Hab. Lamlash Bay, Arran, on Laminaria saccharina. 
I am glad to state that this is a new species added to our 
Fauna. When I had the pleasure of a day’s dredging in 
Lamlash Bay, in September, along with Professor Balfour 
of Glasgow, and other friends, I observed that a large frond 
of Laminaria saccharina, which the dredge brought up, 
was roughened with little bristles, and, tearing off about a 
foot of the frond, I deposited it in my vasculum for more 
leisurely examination. On reaching home, when I began 
to inspect it I saw that the little bristling tubes that had 
