I 



ARENTCOLA. 231 



and equally dark-coloured*. In Berwick Bay, specimens of both 

 species, of all shades, occur. Vast numbers are daily dug up on all 

 parts of the coast by the fishermen, who esteem them one of their 

 best baits. They discharge, on handling, a liquor that imparts a 

 yellow stain to the fingers, which it is difficult to remove. When 

 the worms are steeped in spirits, they impart to the liquid a beautiful 

 grass-green colour. 



(a) No locality. 



(b) Musselburgh, Firth of Forth, Dr. Leach, 



(c) Black-rocks, Firth of Forth, Dr. Leach. 



(d) Aberystwyth, J. Henslow. 



(e) Little Hampton, J. Ahernethy. 

 {/) Sandgate, Rev. Geo. Smith, 

 (ff) Berwick Bay. 



2. A. branchialis, the first 15 segments setigerous only ; branchial 

 tufts in 1 6-28 pairs ; the posterior portion abranchial and apodous. 

 Length 6". 



Arenieola branchialis. And. Sf M.-Edw. Litt. de la France, ii. 287. 



pi. 8. f. 13. Grube, Fam. Anneh 76. 

 Arenieola nodosa, Leach in Brit. Mus. 

 Arenieola Montagui, Leach in Brit. Mus. 

 Arenieola Dorvilliana, Leach in Brit. Mus. 



Hab. The shore near low water. 



Obs. There is no entire specimen in the collection. The species 

 is less than the preceding, and all the specimens have assumed a 

 black or blackish-green colour. The rings of the segments are very 

 distinctly defined, and occasionally so deeply divided that the body 

 is properly described as being nodulous. The variable number of 

 the branchiae appears remarkable, for in A. piscatorum it is fixed 

 and uniform ; and both species agree in having an abranchial tail. 



(a) South Devon, /. Cranch. 



(6) South Devon, Dr. Leach. 



(c) South Devon, Dr. Leach. 



(d) Falmouth. 



3. A. ecaudata, branchial tufts more than 20 pairs ; the first 14 or 

 15 pairs of feet abranchial ; no tail. Length 6-8". 



Arenieola ecaudata, Johnston in Loud. Mag. Nat. Hist. viii. 566. f. 64. 



* " The diversity of colour in this species is very great ; nor do I know that it is 

 dependent on either age [or dimensions. Of a number collected together, some 

 will be found of a carmine colour, or of deeper red, some brownish, and others 

 blackish-green ; besides, there are specimens which exhibit various blending 

 shades in the same individual." — Dalyell. 



" La grande quantite de matiere colorante de couleur safran que fournit VAre- 

 nicole, avoit fait proposer de s'en servir pour la teinture ; mais je n'ai point appris 

 que cette proposition ait ete suivie du moindre commencement d'execution." — 

 Blainville, Diet, des Sc. Nat. Ivii. p. 390. 



