30 A MONOGRAPH OF THE 



triradiate; radii long and slender, attenuating very 

 gradually. 



Colour. White. 



Habitat. Guernsey, Mrs. Buckland ; Scarborough ? 

 Mr. Bean ; Guliot Caves, Sark, J. S. Bowerbank. 

 Examined. In the dried state. 



I am indebted to my kind friend the late Mrs. Buckland 

 for twenty-eight specimens of this little species. The 

 largest does not exceed half an inch in length, a quarter of 

 an inch in breadth, and about two and a half lines in thick- 

 ness, and the attachment rather exceeds a quarter of an 

 inch in diameter. The smallest specimen is about one line 

 in length and half a line in breadth. The whole of the 

 specimens are either coating in habit or have very broad 

 basal attachments, or, if seated on a fine branching fucus, 

 instead of being partially pedicelled after the habit of 

 L. botryoides, it appears always to embrace and envelop the 

 small branches of the fucus in its neighbourhood. The 

 spaces between the inosculating fistulas seldom exceed one 

 and a half time the diameter of those tubes, and are fre- 

 quently not more than half their diameter in width, and 

 all the specimens in my possession are uniform in their 

 structure in this respect. 



The mouths of the cloaca are numerous, and are usually 

 at the termination of short lobular projections of the sponge. 

 The spicular ray of the internal defensive spicula are very 

 much shorter in proportion than those of L. botryoides, 

 rarely exceeding one fourth or one fifth of the interior 

 diameter. 



From these and other general differences in character 

 from the ordinary arborescent forms of L. botryoides, I 

 was at first induced to believe that this sponge might 

 probably prove to be Sjwngia complicata of Montagu ; but 

 Montagu's figure in plate ix, vol. ii, of the 'Transactions 

 of the Wernerian Society,' does not represent the contorted 

 character of our sponge, while it is really a very charac- 

 teristic figure of Sponyia botryoides of Ellis and Solander, 



