374 EDWARD S. MORSE ON 



chophore type and bears a close resemblance to Phoronis and a certain resemblance to the 

 Polyzoa. He expresses the opinion that the Brachiopoda, Polyzoa, and Phoronis should 

 be classed together in a phylum distinct from the Annelida, Mollusca, or Chaetognatha. 



With the appearance of this contribution and the promised one by Yatsu on the 

 development of Lingula, a great flood of light will be thrown upon the relations of this 

 ancient group. 



Professor Conklin in his memoir refers to the work of Mr. Ikeda^ and says, "Mr. 

 Ikeda has given by all odds the most complete account of the embryology of Phoronis yet 

 published." In view of the remarkable work being done by Japanese scholars in embry- 

 ology, histology, and morphology as shown in the various memoirs by Mitsukuri, lijima, 

 Watase, Ishikawa, Sasaki, Oka, Miyoshi, Goto, Inaba, Hatta, Tanaka, Kishinouye, Ma- 

 tsuda, Hiroto, Hirase, Ikeda, and others we may safely say that in the future the greatest 

 illumination on this ancient and closed type of animals will come from the investigations 

 of the young naturalists of Japan. Their work is abreast of the best work done abroad. 

 Their observations are keen, their artistic skill is accurate and refined, their lithographers 

 we would gladly utilize for the reproduction of our own drawings. Japan is the home of 

 the brachiopods. While European and American naturalists have but few forms to study, 

 not only have the Japanese about all the material we have, but their seas contain many 

 genera which we do not find. We may, therefore, safely look to them for further elucida- 

 tion of this fascinating group of animals. 



Literature. 



Barrett, L. 



'55. Notes on the Brachiopoda observed .... on the coast of Norway. Annals and mag. of nat. hist., 2d series, vol. 

 16, p. 257-259, 4 figs. 

 Beddard, Prank E. 



'89. On the structure of three new species of earthworms, etc. Quart, journ. micros, sci., new series, vol. 29, p. 101- 

 131, pi. 12-13. 

 Beecher, C. E. 



'91. Development of the Brachiopoda. Parti. Introduction. Amer. journ. sci., 3d series, vol. 41, p. 343-367. 

 '92. Development of the Brachiopoda. Part 2. Classification of the stages of growth and decline. Amer. journ. sci., 

 3d series, vol. 44, p. 133-155, 1 pi., fig. 1-36. 

 van Bemmelen, J. F. 



'83. Untersuchungen iiber den anatomischen und histologischen bau der Brachiopoda Testicardinia. Jenaische zeitschr. 

 f. naturwissensch., bd. 16, p. 88-161, pi. 5-9. 



' Iwaji Ikeda; Observations on the development, structure, and metamorphosis of Actinotrocha. Journal of the college of 

 science, imperial university, Tokyo, vol. 13, part 4, p. 507-692, 6 plates. 



