170 



ON SOME INVALID MOLLUSCAN GENERIC NAMES. 

 By Tom Ieedale. 



Eead 13th June, 1914. 



Whilst engaged upon the verification of the generic and specific 

 names to be used for molluscs from the Kermadec Islands, Lord 

 Howe Island, jS'orfolk Island, and New Zealand, I have made quite 

 a number of interesting notes. I here put on record some of those 

 that are of more than local interest, and introduce some extra-limital 

 corrections. 



I wish here to draw attention to the verj' imperfect manner in 

 which generic names given to Mollusca have been recorded, and, as 

 I should think that the class in which we are interested does not form 

 an exception, the grave danger there is in depending upon the usual 

 Nomenclators when introducing new generic names. I find that 

 a very large number of comparatively well-known molluscan names 

 included by Fischer in his Manuel de Conchyliogie do not appear in 

 Sharp's Index Zoologicus, !N"os. i and ii. As a matter of fact, 

 I conclude that it is due to the general familiarity of malacologists 

 with Fischer that serious confusion has not been caused. With regard 

 to Miodon, upon which I give a note, neither of the displacing names 

 occur in the Index Zoologicus, though both appeared in the period 

 1880-1900. As an example of this imperfection I think it advisable 

 to give the following extraordinary case. Keferring to Fischer's 

 Manuel I note the following names quoted and introduced, but 

 omitted from the Index Zoologicus : — 



p. 850. TaJitntodiscus^ Fischer, 1885. 



,, Pyrgotroclms, Fischer, 1885. 



,, Perotroclms^ Fischer, 1885. 



,, Chelotia, Bayle, 1885. 



,, Entemnotroclms, Fischer, 1885. 



,, PhjchomphaUna, Bayle, 1885. 



,, Pii/chomp/ialus, DeKomnck, 1883. 



,, Gosseletina, Bayle, 1885. 



,, Gosseletia, De Koninck, 1883. 



,, Gosseletia; Barrels, 1881. 



,, Pithodea, De Koninck, 1881. 



,, Mourloiiia, De Koninck, 1883. 



,, Agnesia, De Koninck, 1883. 

 p. 851. Worthenia, De Koninck, 1883. 



,, Phaneroirema, Fischer, 1885. 



,, Rhineoderma, De Koninck, 1883. 

 Yvania, Bayle, 1885. 



,, Baylea, De Koninck, 1883. 



,, Luciella, De Koninck, 1883. 



That nineteen unrecorded names should appear on two consecutive 

 pages of Fischer's Manuel is of course extraordinary, but on almost 



