CONTRIBUTIONS 10 THE ANATOMY OF EARTHWORMS. 477 
38) Perrier, E.— Mémoires pour servir & Vhistoire, &.,” ‘Nouv. Arch. 
Mus.,’ viii, 1872. 
(34) Perrier, E.—‘C. Rendus,’ cii, 1886. 
(35) Rosa, D.— Lombrichi dello Scioa ’ ‘ Ann. Mus. Civ. Genova,’ vol. vi, 
1888. 
(36) Rosa, D.—* Nuova Classificazione dei Terricoli,” ‘Bull. Mus. Zool. 
Torino,’ vol. iii, 1888. 
(37) Spencer, W. B.—“The Anatomy of Megascolides australis,” 
‘Trans. Roy. Soc. Victoria,’ vol. i, 1888. 
(88) Sroné, A.—[‘* Monograph of Bohemian Tubificide ” |] ‘Abhandl. Bohm. 
Akad.,’ Bd. vii, 1888. 
(39) Vespovsky, F.—‘ System und Morphologie der Oligochaeten,’ Prag, 
1884. 
(40) Vespovsxy, F.—‘ Entwickelungsgeschichtliche Untersuchungen,’ Heft i, 
Prag, 1888. 
(41) Wxztpon, W. F. R.—‘ On Dinophilus,” ‘Quart. Journ. Micr. Sci.’ 
1886. 
EXPLANATION OF’ PLATES XXIX and XXX, 
Illustratmg Mr. Frank E. Beddard’s paper “ Contributions to 
the Anatomy of Earthworms, with Descriptions of Some 
New Species.” 
Fic. 1.—Transverse section through body wallof Peric heta intermedia. 
ep. Epidermis. x. Nerve. (x7. in Fig. 2) x’. Branches of the same. /. 
Blood-vessels. 
Fic. 2.—Diagrammatic transverse section of a portion of the body wall of 
the same species, to illustrate course of nerve-trunks. wz. Nerve. x'. Portion 
lying between transverse and longitudinal muscles. 4. Point at which nerve 
branches; the branch passing to the left (below the ganglionated cord), fuses 
with the corresponding nerve of the left side. v.d. Vas deferens. a. Frag- 
ment of fourth longitudinal muscle-mass, separated by nerve. 
Fie. 2 (@).—Disposition of nerve (~) at its point of bifurcation (4) within 
the body wall in another segment. 
