288 HISTORY OF BEITISH ZOOPHYTES. 



a snake without the lower jaw, in the place whereof is the 

 entrance into the cell/' (Ellis.} 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 state. It is smooth and 

 glossy, but the snake-like tube is marked all along by nu- 

 merous ampliations 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. ANGUINABIA 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 



