STUDIES ON THE PBOTOCHOEDATA. 355 



LiTEKATUKE. 



1. Balpottr. — ' Comparative Embryology,' vol. ii, 1881. 



2. Bateson, W. — " Early Stages in Development of Balanoglossus," 



'Quart. Journ. Micr. Sci.,' xxiv, 1884, pp. 208—230. 



3. Bateson, W. — "Later Stages in Development of B. Kowalevskii,' 



ib., XXV, 1885, pp. 81—122. 



4. Van Beneden, P. J. — " Recberches sur I'Embryogenie, &c., des Ascidies 



simples," ' Mem. Acad. Roy. Belg.,' xx, 1840. 



5. Van Beneden, lio., et Julin, C. — " Le systeme nerveux central des 



Ascidies, &c.," ' Arcb. de Biologic,' v, 1884, pp. 317—307. 

 e. Van Beneden, I^d., et Julin, C— " Recbercbes sur Ic developpement 

 postembryonaire d'une Pballusie," ib., pp. Oil — 038. 



7. Van Beneden, Ed., et Julin, C. — " Recbercbes sur la Morpbologie des 



Tuniciers," ib., vi, 1880. 



8. Davidoff, M. v. — " Untersucbungen zur Entwickel. der Distaplia 



magnilarva, &c.," II Abscbnitt, ' Mittb. zool. Stat. Neapel,' ix, 

 1889-90, pp. 533—051. 



10. DoHKN, A. — Studien. VIII: "Die Tbyreoidea bei Petromyzon, Am- 



pbioxus, und Tuuicaten," ib., vi, 1885, pp. 49 — 87. 



11. DoHRN, A. — Studien. XII : " Tbyreoidea und Hypobrancbialrinne, Spritz- 



locbsack, und Pseudobrancbialrinne bei Eiscben, Ammocoetes, und 

 Tunicaten," ib., vii, 1887, pp. 301—337. 



12. DoiiRN, A. — Studien. XIII : " Uber Nerven und Gefasse bei Ammocoetes 



und Petromyzon Planeri," ib., viii, 1888, pp. 233—300. 



13. FoL, H. — " I^tudes sur les Appendiculaires du Detroit de Messine," 



' Mem. Soc. de Pbysique et d'Hist. nat. de Geneve,' xxi, 1872. 



14. Garstang, W. — " On tbe Development of tbe Stigmata in Ascidians," 



' Proc. Roy. Soc.,' vol. li, 1892. 



15. Hatschek, B.— " Studien iiber Entw. des Ampbioxus," ' Arbeiten aus d. 



zool. Inst, zu Wien,' iv, Heft 1, 1881. 



16. Hatschek, B. — " Mittbeilungen iiber Ampbioxus," ' Zool. Anz.,' vii, 



1884, pp. 517—520. 



17. Harmer, S. E. — " Appendix to Report on Cepbalodiscus by M'lutosb," 



'" Cball." Rep. Zool.,' xx, 1887. 



18. Herd MAN, W. A.— "Relations and Pbylogeny of tbe Tunicata," 



' " Cball." Rep.,' part Ixxvi, 1888, Tunicata III, pp. 121—150. 



19. Hertwig, Oscar. — " Urraund und Spina bifida," ' Arcbiv f. mikr. Anat.,' 



xxxix, 1892. 



