130 RITTER 



PAPERS REFERRED TO IN THE PRECEDING PAGES. , 

 Bateson, W. 



Papers on the development of Balanoglossus. Quart. Journ. Micro. 

 Sci., Vols. 24-26, 18S4-1SS6, pirlicularly The Ancestry of the Chordata, 

 Vol. 26, pp. 535-571. 1S85-86. 



Hill, J. P. 



1895 On a new Species of Enteropneusta {Plychodera australiensis) from 

 the Coast of New South Wales. Proo. Liuii. Sac. N. S. W., Vol. X. 

 (2), pp. 1-42. 



Masterman, A. T. 

 1897 On the Diplochorda. — r. The Structure of Actiuotrocha. 2. The Struc- 

 ture of Cephalodiscus. Quart. Journ. Micro. Sci., Vol. 40, pp. 281-366, 

 1897-98. 



Morgan, T. H. 



1891 The Growth and Development of Tornaria. Journ. Morph., Vol. V., 

 pp. 407-458, 1891. 



Spengel, J. W. 



1893 Die Enteropueusten dcs Golfes von Neapcl und der angrenzeuden 

 Meeres-Abschnitte. Fauna und Flora dcs Golfes von Neapel, Mono- 

 graphic 18, Zoologischer Station zu Neapel. 



Willey, Arthur. 



1897 On Plychodera flava Eschscholtz. Quart. Journ. Micro. Sci., Vol. 40, 

 pp. 165-181, 1897-98. 



1899 Enteropneusta from the South Pacific, with notes on the West Indian 

 Species. Zoological Results based on material from New Britain, New 

 Guinea, Loyalty Islands and elsewhere, collected during the years 1895, 

 1896, and 1897 by Arthur Willey. Part III., pp. 223-334. 



