LIST OF AUTHORS REFERRED TO IN THE TEXT. 



I. J. Barbois, Recherches siir I'Embryologie des Nemertes, Ann. d. Set. Nat., ser. 6, vol. vi., 1877. 

 II. R. Dewoletzky, Zur Anatomie der S"omertinen, Zool. Ameiger, Jahrg. iii., 1880, pjx 372-306. 



III. L. VON Graff, Geonemertes chalicopliora, eine neue Landnemertine. Morph. Jahrb., Bd. v. 



p. 430. 



IV. A. A. W. HuBRECHT, Aanteekeningen over de Anatomie, Histologic en Ontwikkelingsgeschiedenis 



der Nemertinen, Utrecht, 1874. 



V. Untersuchungen iiber Ncmortinen aus dem Golf von Neapel, Niederlcindisches Archw 



fur Zoologie, Bd. ii. S. 99. 



VI. Some Remarks about the Minute Anatomy of Mediterranean Nemerteans, Quart, .Town. 



Mkr. ScL, vol. xv. p. 249. 



VII. The genera of European Nemerteans critically revised, with Description of Several New 



Species. Notes from the Leyden Museum, vol. i. p. 193, 1879. 



VIII. New Species of European Nemerteans. Notes from the Leyden Museimi, vol. ii. 



IX. Zur Anatomie und Physiologie des Nervensystems der Ncmertinen, Verhandel. van de 



KoninM. Akad. van Wetenschappen, Amsterdam, 1880, vol. xx. 



X. The Peripheral Nervous System of the Palteo- and the Schizonemertea, one of the layers 



of the body- wall, Quart. Jnurn. Mier. ScL, vol. xx., 1880. 



XI. • Zur Nemertinen Anatomie, Zool. Anzeiger, Jahrg. iii., 1880, p. 406. 



XIa. On the Ancestral Forms of the Chordata, Quart. Journ. Mier. Sci., vol. xxiii., 1883. 



XII. Der excretorische Apparat der Nemertinen, Zool. Anzeiger, 1885, p. 51. 



XIII. Zur Embryologie der Nemertinen, Zool. Anzeiger, Jahrg. viii., 1885, p. 460. 



XIV. Proeve eener ontwikkelingsgeschiedenis van Lineus obscurus Barr, Utrecht, 1885. 



XV. Contributions to the Embryology of the Nemertea, Quart. Journ. Mier. ScL, vol. xxvi., 



1886. 

 XVI. J. VON Kennel, Beitrage zur Kenntniss de Nemertinen, Arbeit, zool.-zoot. Inst. Wiirzburg, 

 Bd. iv., 1878. 



XVII. Die in Deutschland gefundenen Landplanarien, Arbeit, zool.-zoot. Inst. Wiirzburg, 



Bd. v., 1882. 

 XVIII. A. Lang, Monographic der Polycladen, Leipzig, 1884. 

 XIX. W. C. M'Intosh, a Monograph of the British Annelids — A. Nemerteans, Ray Society Publica- 

 tions, 1873, 1874. 



XX. On Amphiporus spectabilis, Quart. Journ. Mier. SeL, vol. xv. p. 273. 



XXI. On the Central Nervous System, the Cephalic Sacs, and other points in the Anatomy of 



the Lineidae, Journal of Anatomy and Physiology, vol. x. p. 231. 



XXII. Marine Annelida from Kerguelen's Land, Phil. Trans. Roy. Soc. Lond., vol. clxviii. 



(extra vol.), London, 1879. 



XXIII. Description of some New Species of Annelida from Kerguelen's Island, Ann. and Mag. 



Nat. Hist., ser. 4, vol. xvii., 1876. 



