NEREIDS. 143 



setaceous. The superior or terminal fascicle has its bristles sepa- 

 rated into two sets, but the bristles in both are alike and few in 

 number ; they are long and somewhat flexible, the shaft cylindrical, 

 bent or kneed above the middle, whence it tapers to an acute point, 

 and has a pellucid edge along one side ; perhaps the point is con- 

 cave, and this edge may be a deception from the high magnifiers used. 

 The inferior or basal fascicle consists of very short straight setaceous 

 bristles laid parallel to each other. Anal segment without styles. 



One specimen in the Museum Collection is 1 1 inches in length, 

 and as thick as a large quill ; it is of a uniform dark yellowish colour. 

 Two other specimens, about half the size, are of a uniform greyish 

 colour ; — differences dependent undoubtedly on the action of the 

 preservative fluid. There is no appearance to explain the origin of 

 the specific name, — derived no doubt from the living animal. 



The species is nearly allied to the L. Latreilli of Audouin and 

 M. -Edwards, but there are no clavate bristles in the feet of the 

 hinder segments. Perhaps it is even more nearly allied to the 

 CEnone maculata of Edwards, in Cuv. Regn. Anim. Illustr. pi. II. 

 f. 4. There is an exact resemblance in the form of the head, and, 

 so far as I can judge, in the jaws ; but the L. tricolor difl'ers in its 

 markings, in being thicker in proportion to its length, and in having 

 a lobe underneath the foot. 



(«) South Devon, G. Montagu, 



(b) South Devon, J. Crunch. 



Fam. IV. NEREIDiE*. 



Nereis, Linn. Syst. Nat. x. 654, xii. 1085. 



Nereides ( — ), Lam. An. s. Vert. v. 310. Johnston in Ann. Nat. 



Hist. iii. 289. 

 Nereides Lycoriennes, Savig. Syst. Annel. 12, 

 Nereidea ( — ), Blainv. in Diet. Ivii. 464. 

 Nereid^a (— ), Latr. Fam. Nat. 240. 



Nereidiens ( — ), And. ^- M.-Edw. Lift, de la France, ii. 17-9. 

 Nereids, Williams, Rep. Brit. Assoc. 1851, 187. 

 NereidejE, Oersted, Annul. Dan. Consp. 17. 

 Lycoridea, Grube, Fam. Annel. 46. 



Char. Body scolopendriform, with numerous segments, varying 

 in number from age : head distinct, subquadrangular, with two pairs 



* " And after these the sea-nymphs marched all, 



All goodly damzels, deckt with long greene haire, 

 Whom of their sire Nereides men call : — 



***** ^« 



All these the daughters of old Nereus were, 

 Which have the sea in charge to them assinde, 

 To rule his tides, and surges to uprere, 

 To bring forth stormes, or fast them to upbinde, 

 x^nd sailers save from wreckes of wrathfull winde." — Spenser. 



