MOLLUSCA. 
211 
MOLLUSCA 
BY 
Eduard von Martens^ M.D., C.M.Z.S. 
A. The General Subject. 
1. General Works in Progress. 
IIeeve, L. Concliologia Iconica. Nos. 244 & 245. 
[Omliim, Erato, continuation of Marginella and Unto], 
See Zool. Record, i. p. 189. This work has been unfortunately 
interrupted by the death of. the author. 
SowEiiBY, G. B. Thesaurus Conchyliorum. ‘ Part xxiii. London, 
1864, 8vo. 
Contains monographs of the genera Cyclostrema, Adeorhis, 
and Teinostoma by A. Adams, Argonauta and Pomatias by G. B. 
Sowerby, Voluta, Cymba, and Melo completed from part v., and 
three plates to illustrate a monograph of the family of Pupmidce, 
which is promised to appear in the next part. 
Bronn, II. G. Klassen und Ordnungen des Thierrcichs, wis- 
senschaftlich dargestellt in Wort und Bild. Fortgesetzt 
von W. Keferstein. Leipzig und Heidelberg, 8vo. 
The second division of the third volume, treating of the Mala- 
cozoa Cephalophora,, was completed in the year 1865 ; it con- 
tains 1484 pages and 92 plates, copied from the best authors 
and representing all the chief peculiarities of organization, ex- 
ternal form, and development. The parts containing the re- 
mainder of the Puhnonata and the Cephalopoda have also been 
issued. The work has gone far beyond the limits originally 
assigned to it, gradually lapsing into the most detailed accounts 
comprising everything except species. The classification of 
Mollusca generally (encumbered with many new superfluous 
names) is the following : — 
Second subregion Cephalomalacia. 
Class I. Prosopoccpliala (n.) s. Scaphopocla (n.) [^Pentalimn]. 
Class II. Gastropoda (Cuv.) s. Psclaphacepliala (n.). . 
Order 1. Picropoda (Cuv.) s. Coponaidce (n.). 
. Order 2. Opisthohra'nchia (M. E.) = Nudihrancliia, Infer ohranchia et Tec- 
tihranchia (Cuv.). 
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