Moll 1 
MOLLUSCA. 
BY 
P. Chalmers Mitchell, B.A., F.Z.S. 
I — Introduction, p. 1. 
II. — List of Publications, p. 2. 
III. — References ; Systematic Classification, p. 25. 
IY. — References ; Subject-matter Classification, p. 64. 
I.— INTRODUCTION. 
This year again most of the work is systematic. 14 new living genera 
and 24 now fossil genora have boon recorded, and 433 now species and 431 
new fossil species. In the systematic index the extinct species are distin- 
guished by a dagger prefixed. 
Among the more important' papers may be mentioned the following: — 
Bernard has an elaborate study of the palleal sense-organs, and Perrier 
a monograph on the kidney of Prosobranchiata. Whitelegge writes on 
the oyster disease in New South Wales. KowaLevsky & Marion have 
published a most valuable monograph on the Aplacophora. J ACKSON has 
an interesting theory of pelecypod phylogeny, and Giard of the relations 
between Annelida, Mollusca, and other Invertebrata. In Gulick’s paper 
on divergent evolution, and Hyatt’s on the genesis of the Arietidce y is 
much bearing on general morphological theory. 
Cephalopoda : Todaropsis , new genus ; Huddlestonia , new fossil genus. 
Gasteropoda Pulmonata : Atoxon, Buettneria , Phaneropus , Trichotoxon i 
Lconardia , new genera ; Acroria , new fossil genus. 
Gasteropoda Opisthohranchiata : Phialodoris , new genus. 
Gasteropoda Nucleohranchiata : Eoatlanta , now fossil genus. 
Gasteropoda Prosobranchiata : Nassopsis , P seudogibbula , Blaesospira f 
Xenopoma , Sabinella , Clydonochilus , new genera ; Amblydcrurn , Latiro- 
fusus , Streptochetus , Suessionia, Trachelochetus , Morionassa, Fulguroficus , 
Ischnodactylus , Alocaxis , Oi'thochetus , Tryponaxis, Pseudonerinea, Aizyella, 
new fossil genera. 
