TYPE ANNELIDA. 253 



MYZOSTOMIDA. 



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



Report on the Myzostomidce. Sclent. Results of the Voyage of H.M.S. 



Challenger. Zool., x, 1884. 

 J. Beard. On the ? Life-history and Development of the Genus Myzostoma. 



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



PHORONIDA. 



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



Quarterly Journ. Microscop. Science, XXI, 1881. 

 C. J. Cori. Untersuchungen iiber die Anatomie und Histologie der Gattung 



Phorords. Zeitschr. fur wissensch. Zoologie, LI, 1891. 



