;io 



ARICIAD^. 



The TerebeUu tentaculata of Montagu and the Cirrhatulus La- 

 marckii of Audoum and MUne-Edwards appear to be the same 

 species. The figure of Montagu is sufficiently characteristic ; and 

 better, indeed, than that given in Sir John G. Daly ell's recent work. 

 Criticisms adverse to our opinion, founded on the number of annu- 

 lations in the snout, do not sway us, nor originate a halt ; for in 

 Montagu's time such a character was not looked for, nor deemed 

 necessary to be delineated with exactness. Neither was his fair artist 

 a naturalist. And, in fact, the segments of the snout are so corru- 

 gated that they simulate true annulations : and these observations 

 are now verified by the examination of Montagu's own specimens. 



(a) South Devon, George Montagu. 



2. C. borealis, proper branchial filaments originating from the ante- 

 rior margin of the fourth segment in a clustered transverse series ; 

 the body filaments comparatively few and scattered : a curved black 

 line (a series of eyes ?) on each side of the suture of the first seg- 

 ment. Length 4-6". Plate XVIII. figs. 7-12. 



Lumbricus marinus cirris longissimis. Mull. Wurm. 193. 



Lumbricus cirratus, Mull. Zool. Dan. Prod. no. 2608. Fabric. Faun. 



Grcenl. 281. f. 5. Dalyell, Pow. Great, ii. 133. pi. 18. f. 1-4. 

 Cirratulus borealis, ham. Anim. s. Vert. v. 302 ; 2nde edit. v. 536. 



Stark, Elem. ii. 141. Oersted, Annul. Dan. Consp. 43; Grant. 



Annul. Dorsibr. 54; Kr oyer's Naturh. Tids. 1842, 126. Rathke 



in Nov. Act. Acad. Nat. Curios, xx. 180. tab. 8. f. 16 & 17- Grube, 



Fam. Annel. 67. 

 Cin'atulus fuscescens et C. flavescens, Johnston in Jameson's Edin. 



Phil. Journ. xiii. 219. Blainv. Diet. Ivii. 490. 

 Cirratulus Medusa, Johnston in Mag. Nat. Hist. vi. 124. f. 13; and 



in Mag. Zool. Sf Bot. ii. 71- pi. 3. f. 7-12. W. Thompson in Ann. 



S,' Mag. Nat. Hist. xiii. 437. 

 Terebella Meleseti, Leach, MSS. Brit. Mus. 



Hah. The littoral region. 



Tfesc. Body from 3 to 6 and sometimes even 9 inches long, tapered 

 a little towards each extremity, rather less than a quill in calibre ; 



No. XXXVII. — Cirratulus borealis. 



the ventral surface flattened and furrowed down the centre, of a dirty 



