LIST OF AUTHORS REFERRED TO IN THE TEXT. 



I. J. Barrois, Eecherches sur I'Embryologie des Nemertes, Ann. d. Sci. Nat., ser. 6, vol. vi., 1877. 

 II. R. Dewoletzky, Zur Anatomie der Ifemertinen, Zool. Ameiger, Jahrg. iii., 1880, pp. 372-306. 

 III. L. VON Graff, Geonemertes clialicophora, eine neue Landnemertine. Moryh. Jahrb., Bd. v. 



p. 430. 

 IV". A. A. W. HuBRECHT, Aanteekeningen over de Anatomie, Histologic eu Oiitwikkelingsgeschiedenis 

 der Nemertinen, Utrecht, 1874. 



V. Uiitersuchungen iiber Nemertinen aus dem Golf von Xeapel, Niederldndisches Archiv 



fiir ZooJogie, Bd. ii. S. 99. 



VI. Some Remarks about the Minute Anatomy of Mediterranean Nemerteans, QuaH. Journ. 



Micr. Set., 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 Museum, vol. ii, 



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



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



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



of the body- wall. Quart. Joiurn. Micr. Sci., vol. xx., 1880. 



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



XIa. On the Ancestral Forms of the Chordata, Quai-t. Journ. Micr. Sci., vol. xxiii., 1883. 



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



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



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



XV. Contributions to the Embryology of the Nemertea, Quart. Journ. Micr. Sci., vol. xxvi., 



1886. 

 XVI. J. VON Kennel, Beitrage zur Kenntniss de Nemertuien, 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, Monographie 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. Micr. Sci., vol. xv. p. 273. 



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



the Lineidfe, Journcd of Anatomy and Physiology, vol. x. p. 231. 



XXII. Marine Annelida from Kerguelen's Land, Phil. Trans. Roy. Soc. Lo7id., vol. cLxviii. 



(extra vol.), London, 1879. 



XXIII. Description of some New Species of Annelida from Kerguelen's Island, Ann. and 3Iag. 



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



