156 Gatliff and Gabriel: 



Chiton limans, Sykes. 



This name drops, and must be deleted from our list. It had 

 been revived by Sykes, but as Ashby has pointed out in his report 

 on the Bracebridge Wilson collection of Chitons in the National 

 Museum, dealt with by Sykes, the shells there to which the name 

 of C. limans was given proved to be C. tricostalis, Pilsbry. 



There will be other alterations made in the nomenclature of the 

 Polyplacophora not yet definitely decided upon. Ashby and 

 other workers are dealing with the subject. 



Genus Rhizorus, Montfort 1810, replaces Volvulella, Newton 



1 891. 



Genus Cylichnella, Gabb 1873, replaces Bullinella, Newton 



1891. 



Genus Bullaria, Rafinesque, replaces Bulla, Linne 1767. 

 Genus Ringicula, Deshayes 1838. 



RiNGICULA GRANDINOSA, Hinds. 



1844. Ringicula grandinosa, Hinds. P.Z.S., Lond., p. 96; 

 1878. Ringicula grandinosa, Hinds. Braz. P.L.S., 



N.S.W., v. n., p. 78. 

 1893. Ringicula grandinosa, Hinds. Pilsbry, Man, 

 Conch., v. XV., p. 409, pi. 47, f. 72. 

 Hah.— Vort Albert (Worcester). 



Ohs. — ^A stout shell, whorls rounded. ** The last large, sub- 

 quadrate, rotund." 



Genus Tethys, Linne 1758, replaces Aplysia, Linne 1767. 



Genus Kerguelenia, Mabille and Rochebrune 1887. 

 This genus includes Siphonaria istomae, ,Verco, previously 

 listed. 



Genus Gadinia, Gray 1824. 



Gadinia conica, Angas. 



1867. Gadinia conica, Ang. P.Z.S., Lond., pp. 115 and 

 220, pi. 13, f. 27. 

 This name replaces that for the shell listed as G. angasi, DalL 



