24 CLASS ANNELIDA. 



Aricia, Sav., want both teeth and tentacula. Their body, 

 which is elongated, supports upon the back two ranges of 

 lamellated cin-hi, and their anterior feet are furnished with 

 denticulated crests, which are not found on the other feet. 

 Ar. Cuvierii, And. and Edw, Litt. dela France, Ann el. pi. vii. 

 p. 1—13. 



The Lumhricus Arniiger, Mull., Zool., Dan. pi. xxii. f. 4 and 

 5, of which, without having seen it, M. de Blainville proposes 

 to form a genus under the name of Scolople, appears to 

 want both teeth and tentacula, and to have simple small 

 bundles of short bristles on its first segments, and a bifid 

 wart, a small bristle, and a branchial lamina, long and pointed, 

 on the others. 



Our coasts of the Atlantic possess some species of many 

 of these genera. 



Hesione have the body short, tolerably thick, and com- 

 posed of few and indistinct rings ; a very long cirrhus, which 

 probably performs the function of gills, occupies the upper 

 part of each foot, which also has another inferior one, and a 

 bundle of bristles. Their proboscis is large, and without 

 jaws or tentacula. We have some from the Mediterranean, 

 Hesione Splendida, Sav. Egg. Annel. pi. iii. f. 3 ; H. /estiva, 

 id. ib. p. 41 ; Hes. pantherina^ Risso., Eur., Mir. iv. p. 418. 



Ophelina, Sav. 



The body thick and short, with feebly-marked rings, and 

 scarcely perceptible bristles ; some long cirrhi, serving as 

 gills on the two thirds of its length. The mouth contains, at 

 the palate, a denticulated crest ; its lips are surrounded with 

 tentacula, of which the upper two are larger than the others. 



N. B. It is probably in this neighbourhood that should 

 come the Nereis prismatica and hifrons, Fabric. Soc. d'Hist. 

 Nat. de Copenh. v. prera. part pi. iv. p. 17 — 23. 



