32 Moll 
MOLLUSCA. 
cinidce, and the larvae of Cymbuliidce are thus ultra-dextral ; Pelseneer 
(321) [pf. Lang (228)]. — Growth of the shell in Helix aspersa ; Ville- 
poix (445). 
Banding of Helix nemoralis and II. hortensis ; Horsley (192). — Colour 
and banding in land and freshwater shells ; Williams (470), Webb (457). 
— Sculpture of American Limnceas ; Stearns (421). 
The shell of Parmophorus covers the whole of the body, and not the 
anterior portion only, as figured by Pelseneer ; Boutan (36). — Structure 
of the integument of Chitons ; Blumricii (25). — Accessory plates and 
their use in classification ; Dubois (102). — Accessory plate to Corbula 
henckelinsi ; Vincent (446). 
Structure of the shelly tube of Gastrochcena ; Sluiter (403). 
Much thickened variety of Bulimus bivaricosus ; Etheridge (108). 
Deformities in shells [amongst which is included Vermetus !] ; Martin 
(259). — Some common deformities of the shell of Clausilia rugosa ; 
Cockerell (61). 
Epipodium of Mollusca ; Pelseneer (319). 
Chromatophores of Cephalopoda are pigmented elastic spheres whose 
movements of expansion are determined by the contraction of radial 
muscles ; Phisalix (328). — The radial fibres are not muscles but con- 
nective tissue ; Blanchard (20). —The chromatophores of Cephalopoda 
Octopoda have an ectodermic and their accessory parts a mesodermic 
origin ; Joubin (205). 
Autonomy and reproduction of the dorsal appendages ( Phoenicians ) of 
Tethys lepor'ma\ Parona (314). 
3. 'Muscular System. 
Nothing. 
4. Digestive System. 
Mandibles of fossil Nautiloids; Foord (126). — Raduloe of Mollusca : 
Thiele continues Troschel’s monograph, completing the Uhipidoglossa 
and beginning the Docoglossa ; (441). — The liver of Testacella exhibits 
every form of passage between tessellated and cylindrical epithelium ; 
Chatin (59). — The liver of Nudibranchiata is homologous with that of 
the Pelecypoda, and is in great part formed by the left hepatic lobe of 
the embryo; Fischer, H. (115). 
5. Circulatory System. 
Nuclear division in the amoeboid cells of Cephalopoda takes place by 
fragmentation ; Cattaneo (57). — Relationship of the circulatory appa- 
ratus to the nervous system in Gastropoda ; Bouvier (38). — A heart 
is present in Dentalium , and was figured by Lacaze-Duthiers, who over- 
looked it. It is rudimentary, and consists of nothing more than a sac- 
