39 



and meaning". Hundreds, and perhaps thousands, of generic names have 

 been rejected on this ground and new names adopted in place of them. 

 The status of variants of names of earlier date is now left more or less 

 in doubt, under the International Code of Zoological Nomenclature, 

 through the "Recommendations" appended to Article 36. Therefore 

 as a member of the International Commission on Nomenclature, I beg 

 to offer the following amendment to Article 35 of the Code. 



Amendment. 



Generic names of the same origin and meaning shall be considered 

 homonyms if they are spelled alike or are distinguished only by the follow- 

 ing differences: 



a. In the gender endings, as masculine, feminine or neuter, in either 

 Greek or Latin form, as us, a, urn, on, os, ium, ia, ios etc., or in the 

 endings a and es, as Hydrobata and Hydrobates, Hydropota and Hydro- 

 potes, Ocipta and Ociptes, Scirteta and Scirtetes; or a and is, as Diphylla 

 and Diphyllis, -chlora and -chloris, Enhydra and Enhydris; es and is, 

 as -mantes and -mantis, JEgialites and JEgialitis ; es and us, as Megastes 

 and Megastus; e and a, as Calliste and Callista, Euphrosyne and Euphro- 

 syna, Parthenope and Parthenopa, Philacte and Philacta; a, as and os, 

 as -cera, -ceras and -ceros; ia and ios, as Pelagia and Pelagios; -oda, 

 -odon, -odos, -odus and -odontia, as Eleurothrenoda and Eleurothrenodon, 

 Aplodon and Aplodus, Prionodon and Prionodus, etc.; -ops and -opsis, 

 as Oeranops and Ceranopsis, Lithops and Lithopsis. 



b. In whether the connecting vowels in compound names are a, e, 

 ei, eo, i, o or y, as Dromatherium and Dromotherium, Delotherium and 

 Deilotherium , -emys and -omys, Auri- and Auro-, Mona- and Mono-, 

 Hylat- and Hylot-, Oromeryx and Oreomeryx, Ptiloginys and Ptilogonys, 

 Contopus and Contipus, -poria and -poreia, Dusicyon and Dusocyon, 

 Stylephorus and Stylophorus etc. 



c. In aspiration or nonaspiration , as Abrothrix and Habrothrix, 

 Cam- and Cham-, Bac- and Rhac-, Ram- and Rliam-, -nathus and -na- 

 tus, -ryncus and -rhynchus, -stetia and -stethia, etc. 



d. In the use of i, j or y where these letters are interchangeable, 

 as Ai-, Aj- and Ay-, Bigio- and Dyglo-, Midaus and Mydaus, Oligodon 

 and Olygodon, Tideus and Tydeus, Didelphis and Didelpkys, -coris and 

 -corys, -pliris and piirys, etc. 



e. In the use of e and k , as in Acodon and Akodon , Kerodon and 

 Cerodon, Kogia and Cogia, Sika and Ä'ea, etc. 



f. In the use of c and #, as in Clanculus and Clangidus, -procne 

 and -progne, etc. 



g. In the use of single or double o, or single or double Z, w, r and 



