3/ 



IV. SCOLOCES. 



I. LUMBRICINA. 

 Fam. I. LUMBRICIDiE. 



LuMBRicus, Linn. Syst. 1076. Miill. Verm. i. ii. 24. 

 Les Lombrics, Cuv. Regn. Anim. iii. 209. 

 Les Echiurees, Lam. An. s. Vert. v. 297. 

 LuMBRici, Savig. Syst. Annel. 100 & 103. 

 LuMBRiciNA, Blainville in Diet, des Sc. nat. Ivii. 493. 

 Earth-Worms, Derham, Phys. Theol. 223 & 393. 



Obs. Oersted has separated the Lumbricidse into two families, — 

 the Terricolse and the Lumbricillse. The Terricolse embrace the 

 larger and fleshier, and hence the comparatively opake, species, 

 which are further distinguished by the spines being solitary in their 

 insertion, short, straight, subulate, and only a little protruded. The 

 Lumbricillse are subpellucid, living in the wet mud of rivulets or on 

 the sea-shore. The bristles are two or more in a common insertion, 

 hooked or subulate, and protruded to a greater length. The Terri- 

 colse burrow in the earth and trail vdth difficulty along the surface ; 

 but the more vivacious Lumbricillse partly creep and partly swim. 

 On a first glance these characters seem distinctive enough ; but, I 

 believe, it will be found impossible to sustain the separation of the 

 families in practice. 



In this tribe it seems necessary to distinguish three sorts of 

 Bristles: — (1) the Spine distinguished by being tapered from an 

 obtuse base to a point slightly bent (Woodcut No. I. fig. 1) ; (2) 

 the Spinet by being slightly bent and pointed at both ends (fig. 2) ; 

 and the Bristle proper (fig. 5) which is slender and setaceous like a 

 hair. The latter are always fasciculate. 



1. LUMBRICUS. 



Lumbricus, Linn. Syst. x. 647- Cuv. Reg. Anim. iii. 209. Lam. An. 



s. Vert. v. 298. Schweig. Handb. 590. Blainville in Diet, des Sc. 



nat. Ivii. 494, Leach in Supp. Encyclop. Brit, i, 451. Duges in 



Ann. des Sc. nat. xv. 289. Hoffmeister, Regenw. 4. Williams in 



Rep. Brit. Assoc. 1851, 218. 

 Enteriou, Savig. Syst. Annel. 103. 



Char. Body vermiform, distinctly annulated, with narrow nearly 

 equal segments, the first (head) small, lobe-like, retractile within the 



