MISCELLANEOUS. 255 



2. CLYMENE BOREALIS. Plate XXXV. Fig. 5. 



Naturalists have instituted a genus Clymene, which, to me, seems 

 not very remote from the Terebella, or which might be perhaps intro- 

 duced between the Lumbricus and the Terebella. It wants several fea- 

 tures of the Nereis, and exhibits some which do not belong to the Lum- 

 bricus, therefore standing apart from both. 



Savigny is reputed the founder of a genus to comprehend this ani- 

 mal, observed first by him in Egypt, but I have not been so fortunate 

 as to obtain his account of it. 



I am not aware that either its description, or its history, have en- 

 tered the British Fauna. Only one species is known to me as inhabiting 

 Scotland, which occurred many years ago. 



It extends three inches in length, by about a line in thickness. 

 The body consists of about twenty-four segments of irregular dimensions, 

 some being twice the length of others, with a pencil of several bristles 

 issuing from both sides of each. 



The extremity of the first segment dilates into a dental thin rim of 

 from sixteen to twenty-four teeth, according to the specimen. These are 

 somewhat extensile. The extremity of the last segment is obtuse as an 

 ovoid. 



The anterior extremity forms a very shallow funnel, with "the 

 mouth in the centre. And there is a longitudinal groove or depression 

 down some of the segments. 



This animal dwells in a compact, hard, irregular tube, constructed 

 of sandy particles, united by an exudation apparently from the whole 

 body, and fashioned chiefly during the night. The teeth of the funnel 

 are probably instrumental in the work. 



It is extremely difficult, almost impracticable, to free the tenant of 

 its tube without rupture of the body, or some great injury. 



It is not rare, dwelling in rocky clefts on the shore towards low- 

 water ; but specimens as large as the dimensions instanced are uncom- 

 mon. They survive readily for a considerable time. 



