Vol. XXIV, pp. 7-12 January 28, 1911 PROCEEDINGS or in i ; BIOLOGICAL SOCIETY OF WASHINGTON THE NOMENCLATURE OF THE SCYPHOMEDUS/E. COMPILED BY T. D. A. COCKERELL. Having become greatly interested in Dr. A. G. Mayer's great work Medusae of the World (Carnegie Institution, 1910), and being at the same time concerned with matters of nomenclature, I was led to take up the nomenclatural questions involved in the classification of the Medusae, and in consequence to enter upon a correspondence with Dr. Mayer regarding a number of difficult points. Dr. Mayer's work is so well done that it affords material for the investigation of almost any question that may arise regard-ing the Medusae. From the standpoint of correct nomenclature, and in some cases proper grammatical form, fault may often be found with the names of the subfamilies, families and higher groups. The objectionable forms are of course in no case due to Dr. Mayer, but have been received from older authors who were more or less indifferent to the preferred usages of zoologists. There are certainly good reasons for adopting a fairly uniform system of nomenclature for the higher groups in zoology, and in particular the names of families and subfamilies should accord with the International Code. In the following list I have included the Scyphomedusa? of the world down to genera (excepting those which are of quite uncertain status), and in each case have given the carefully ascertained type species of the genus. The whole list has been very kindly gone over by Dr. Mayer (who is substantially its author, although he declines to stand in that position) and approved by him, with two exceptions presently to be men-tioned. In several cases, where I had suggested an innovation with a query, he ran his pencil through the query-mark; but o— Pkoc. Biol. Soc. Wash., Vol. XXIV, 1911. (7)
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