NO. 3 OPINIONS 82 TO (jO II 



OPINION 84 



Trematode, Cestode, and Acanthocephala Names Placed in 

 THE Official List of Generic Names 



Summary. — The following names are hereby placed in the Official List of 

 Generic Names: Treaiatdha : I >icrocncIiiiiii. Fasciula, Gqstrodiscus. Hclcro- 

 phycs. Cestoda : Davainca, DipyHdiiiin, Ecliiiiococcus, Taenia. Acanthoce- 

 phala : Gigantorhynchus. 



StatEiMENt of case. — In the Proceedings of the Ninth Interna- 

 tional Congress on Zoology at Monaco (published 1914), pp. 858-859, 

 the Commission published 1 1 generic names for Trematoda, 5 for 

 Cestoda and i for Acanthocephala, which were under consideration 

 for adoption in the Official List of Generic Names. 



Tlie Secretary to tlie Commission (see p. 892 of the Proceedings of the 

 Ninth International Congress on Zoology) was asked if it would be agreeable 

 to him to re-submit the names in question to sub-committees of specialists, 

 before they were formally approved. His reply was that the suggestion was 

 entirely agreeable, and he withdrew his request for formal approval of 

 this. list. 



In addition to publication in the Proceedings of the Congress at Monaco, 

 these names have been made public by publication in the following places : 

 Bull. Soc. Zool. France, 1915, Oct. 30, vol. 40, p. 87. 

 Nature, 1911. Nov. 23, vol. 88, p. in. 

 Science, 1912, Jan. 26, vol. 35, p. 146. 

 Zoologischer Anzeiger, 1912, Jan. 26, vol. 35, p. 146. 



The names were also included in Circular Letter No. i from the Secretary's 

 office, and submitted to approximately 350 zoologists and zoological institutions 

 of various kinds in the Argentine, Australia, Brazil, Canada, Denmark, Holland, 

 India, Japan, Mexico, New Zealand, Norway, Philippine Islands, Porto Rico, 

 Russia, Sweden, Switzerland and the United States. Twenty copies were sent 

 to each member of the Commission for distribution especially in his own 

 country, i. e., Austria, England, France, Germany, Italy, United States, Wales. 



Eleven lists were returned with no action taken, hence the persons returning 

 them come under paragraph 4 of Circular Letter No. i, that is to say, they 

 have no opinion upon the matter either one way or the other, and accordingly 

 the question as to the adoption or rejection of the names is immaterial to them. 

 The eleven lists in question came from the following sources : Biological Staff 

 of Princeton University, per E. G. Conklin ; R. P. Cowles ; A. G. Mayer; 

 A. E. Lambert; Department of Zoology, Indiana University, per A. G. Ilenn ; 

 H. L. Wieman; E. L. Rice; D. S. Jordan; H. D. Reed; H. F. Nachtrieb ; 

 R. Blanchard. 



Twenty-five (25) persons expressed opinions on the names; some on all of 

 the names, and others only on names with which they are best acquainted. In 

 no case was any objection or question raised to any of the names included 

 in this Opinion 84. The 25 persons in question were: J. F. A1)bott ; A. A. 



