CLYMENE. 233 



vent usually encircled with a crenate or papillose margin : head not 

 distinctly defined, of the form of an oval plate lying upon the next 

 segment, inclined forwards and without appendages ; or ring-shaped 

 and passing at the margin into a fimbriated membrane : post-occipital 

 segment furnished with tufts of bristles : mouth directed forwards, 

 edentulous : feet 2-rowed, the upper with thin tufts of bristles pro- 

 jecting from small and sometimes almost imperceptible tubercles ; 

 the inferior formed by a transverse series of crotchets : bristles 

 simple, setaceous. 



37. CLYMENE. 



Clymene, Savign. Syst. Annel. 70, 92. Grube, Fam. Annel. 11. 



Char. Head or anterior segment without appendages : anal seg- 

 ment expanded into a serrated funnel. 



1 . C. borealis. 



C. borealis, Dalyelly Pow. Creat. ii. 255. pi. 35. f. 5. 

 Hab. Shores of Scotland, " not rare, dwelling in rocky clefts on the 

 shore towards low-water." — Dalyell. 



Desc. " It extends 3 inches in length, by about a line in thickness. 

 The body consists of about twenty-four segments of irregular dimen- 

 sions, 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 exten- 

 sile. The extremity of the last segment is obtuse and 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 appa- 

 rently 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." — Dalyell. 



It will be remarked that Sir John describes the anterior for the 

 posterior end of the worm, which appears to be the Sabella lumbri- 

 calis of Otho Fabricius, Faun. Groenl. 374 = Clymene lumbricalis, 

 Savign. Syst. Annel. 94. 



I have not seen a specimen. 



Dr. Williams mentions as native a Clymenoida arenicoiday Rep. 

 Brit. Assoc. 1851, 209 & 229 ; but I am not aware that he has any- 

 where defined the genus or described the species. The names are 

 very objectionable. 



