TTPE ANNELIDA. 253 



MTZOSTOMIDA. 



L. von Graff. Das Oenus Myzostoma. Leipzig, 1877. 



Report on the Myzostomidm. Scient. Results of the Voyage of H.M.S. 



Challenger. ZooL, x, 1884. 

 J. Beard. On the 'Life-history and Development of the Oenus Myzostoma. 



Mitth. a. d. zool. Station Neapel, v, 1884. 



PHOEONIDA. 



E. B. Wilson. The Origin and Significance of the Metamorphosis of Actinotrocha. 



Quarterly Journ. Microscop. Science, xxi, 1881. 

 C. J. Cori. Untersuchungen -iiber die Anatomic und Histologic der Oattung 



Phorords. Zeitschr. fiir wissensch. Zoologie, Li, 1891. 



