. Bulletin of zoological nomenclature. 240 Bulletin of Zoological NoniendcUure the International Clouimissiou, M. Ranson argued in favour of the acceptance of the Histoire Naturelle of 1819 in place of the Systeme of 1801 as the work, as from which the type species of the genus Gryphaea Lamarck should be chosen. In advancing this view, M. Ranson did not ask that the International Conmiis- sion should use its plenary powers to secure the end that he had in view but sought to show that it would be permissible, under the norn\al operation of the Regies, to disregard the ISysterne of 1801. As the
. Bulletin of zoological nomenclature. 240 Bulletin of Zoological NoniendcUure the International Clouimissiou, M. Ranson argued in favour of the acceptance of the Histoire Naturelle of 1819 in place of the Systeme of 1801 as the work, as from which the type species of the genus Gryphaea Lamarck should be chosen. In advancing this view, M. Ranson did not ask that the International Conmiis- sion should use its plenary powers to secure the end that he had in view but sought to show that it would be permissible, under the norn\al operation of the Regies, to disregard the ISysterne of 1801. As the lat€ Mr. Winckworth has shown. this would, however, not be possible. Nevertheless, if the majority of interested specialists were to favour the end sought by M. Ranson, namely the acceptance of Gryphaea angulata Lamarck, 1819, as the type species of the nominal genus Gryphaea Lamarck, a solution in that sense could readily be provided by the International Commission by the use of its plenary powers. 4. The issue which, in eflfect, the International Commission is asked to decide is :— (1) whether the normal provisions of the Regies are to be allowed to operate in the present case, with the result that the generic name Gryphaea would rank from Lamarck, 1801, and would have, as its type species, the fossil species, Gryphaea arcuata Lamarck, 1801 (by selection by Anton, 1839); or (2) whether the plenary powers should be used to suppress the name Gryphaea Lamarck, 1801, and all uses of that generic name from 1801 to the date in 1819, when it was republished by Lamarck in the Hist. nat. Anim. saus Vertebr, the name Gryphaea Lamarck, 1819 (so validated) having, as its type species, the recent species Gryphaea angulata Lamarck, 1819 (by selection by Children, 1823). 5. As the application submitted in this matter by M. Ranson is of direct concern to palaeontologists as well as to zoologists, the International Com- mission, before reaching a decision, will be anxious to be fuUy infor
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