566 Arenicola ecauddta. 



somewhat corneous, and roughened, apparently, with some short 

 spinules; but, as it is deeply immersed in the flesh of the fish, 

 I have not succeeded in removing it in a state so entire as to 

 form a correct idea of its natural form. Immediately behind 

 it there is a collar, and then a short narrow neck, uniting it to 

 a long cylindrical process, which is curved and bifid, or deeply 

 sinuate at the apex. From the anterior and inferior side of 

 this process the body depends ; this is thick, oblong, with an 

 obscure furrow down the middle, and terminated below by a 

 papillary process. The two ovarian cords are articulated to 

 the base of the body, and are nearly twice its length ; they 

 are cylindrical, straight and smooth, and dotted with brownish 

 specks, which are presumed to proceed from the embedded 

 ova. 



Lernae'a uncinata belongs to the restricted genus Clavella 

 of OJcen, Cuv. Reg. Anim., iii. 258. ; and the following are 

 the only additional references which my library enables me to 

 make : — Lernae v a uncinata Mull., Zool. Dan. Prod., 226. 

 No. 2746. ; Fabr., Faun. Green!., 3S8. No. 328. ; Turt, Gmel., 

 iv. 114.; Lam., Anirn. s. Vert., iii. 231.: Bosc, Vers, i. 59. 

 pi. 1. fig. 4. (bad). [On Lernse'ae, see some information in 

 VI. 95.] 



46. Areni'cola ecauda^ta. {fig. 54.) 



The worms which constitute the little family named Areni- 

 colidae, are of the number of those which connect the Anne- 

 lides errantes with the A. tubicoles, their organisation being 

 of that undecided and commixed character, that some natu- 

 ralists have placed them in the former, and others, of equal 

 authority, in the latter order. Thus Savigny arranges them 

 among the Serpulidae ; a family of Tubicoles, but Cuvier 

 among his Dorsibranches, which is almost synonymous with 

 the Errantes of Audouin and M. Edwards. 



The body of the Arenicolidae is vermiform, cylindrical, and 

 formed of comparatively few segments ; but the segments them- 

 selves are annulated, or divided into a certain number of cir- 

 cular plaits or rings: it is acephalous and obtusely pointed in 



