216 Description of the Plates. 



contain ovRj appended to it. It then passes outwards in 

 relation with the dissepiment, to end by opening* externally 

 immediately externally to the internal row of setae. It is 

 crossed just before its termination by a part of one of the 

 tubular muciparous or segmental organs which is passing 

 forwards to pierce the dissepiment, and end in its infundi- 

 bulum in the segment next in front. 



For the nerve system, see Lockhart Clarke, Royal Society's Pro- 

 ceedings, vol.viii., 1857, p. 343 ; see also Quatrefages, Ann. Sci. 

 Nat., Ser. iii., torn, viii., 1847, p. 36; Morren, De Lumbrici 

 Terrestris Historia Naturali necnon Anatomia Tractatus, 1829, 

 tabs, xix.-xxi., figs, i and 2, Jc. <?., p. 119; and Leydig, Hand- 

 buch Vergleich. Anatomic, tab. iv., p. 168. 



For the reproductive system, see Hering, Zeitschrift Wiss. Zoo!., 

 vol. viii., 1857; Lankester, Quarterly Journal of Microscopical 

 Society, vol. v., 1865, p. 10. 



For the segmental organs, see Gegenbaur, Zeitschrift Wiss. Zool., 

 vol. iv., 1853, p. 231 ; Hering, I. c, p. 401 ; Ehlers, Die Bors- 

 tenwurmer, i., pp. 37-45, 1864; Claparede, Introduction to 

 work on Annelids of Bay of Naples, translated by W. S. Dallas, 

 Ann. and Mag. Nat. Hist., Ser. iii., vol. xx., 1867, p. 355. 



