BIOLOGY. 
Moll 35 
2. Shell and Integument. 
Development of internal shells in the Octopoda ; Appellof (9).—Cor¬ 
rosion of shells in cabinets is caused by butyric acid ; Byne (68). 
Variation of Limncea ; Crowther (110).—Tentacles of Nautilus; 
Griffin (181).—Shell of Placunanomia adapted to site; Griffin (180).— 
The pigments of Aplysia punctata ; MacMunn (281).—Variation in 
Gastropoda ; Martens (292).—Morphology of the Pelecypod shell, especially 
in the Veneridce ; Noetling (357).—Structure of the hinge in Pelecypoda ; 
Noetling (356 & 357).—Red coloration in the interior of the shells of 
Anodonta plana caused by a distomid parasite; Osborn (370).—On 
reparation and renewal of the shell in pulmonate Gastropods; Paravicini 
( 374).—Note on Pelecypod variation; Parkinson (377).—On the formation 
of pearls; Parville (379).—Abnormalities in Planorbis due to Epistylis 
anastatica ; Standen (501).—On pigment in the Mollusca ; Steinmann 
( 511).—Shell and hinge in Gycladidce-, Sterki (515).—Study of hinge in 
Pelecypoda ; Vest (569, 570). 
3. Muscular System. 
Muscles in boring Pelecypods; Lloyd (267).-—Reflex action of muscles 
in Helix pomatia ; Pompilian (417).—Muscular contraction in Helix 
pomatia ; Pompilian (418). 
4. Digestive System. 
On the function of the so-called liver in Mollusca; Biedermann & 
Moritz (28).—On cellulose in the hepatic secretions of snails; Bieder¬ 
mann & Moritz (27).—The action of electrical stimuli upon the oesophagus 
of Aplysia depilans and A. limacina ; Bottazzi (48).—On the functions of 
the liver in the Pulmonata\ Cuenot (112).—Pigmentation of liver in the 
Invertebrata; Dastre & Floresco (,124).—The intestinal epithelial cells 
in Helix ; Elleiiman (146).—Digestive system in Neritina Jluviatilis ; 
Lenssen (264).—Gastric gland in Mollusca; MacMunn (280).—On the 
digestive tract and the “ Centro stomato-gastrica ” in Aplysia ; Mazza- 
relli (299).—Finer structure of stomach in terrestrial Gastropods; Monti 
( 331). — Radnla in Hyalinia ; Moss (337).—Innervation of digestive canal 
in Helix pomatia ; Paravicini (375).—Radula of Helicina , Cyclophoridce , 
Cyclostomatidce , Zonitidce, Helicidce , Buliminus , and Streptaxis ; Sarasin 
( 456).—Radula of Paryphanta, Rhytida, Trophon ambiguus , and T. patens ; 
Suter (526).—Note on abnormal radula in land shells; Suter (526).— 
Radnla of Donovania minima ; Woodward (591). 
5. Circulatory System. 
Pulsation of heart in land and freshwater molluscs; Baker (18).— 
Phagocytosis in the development of the Invertebrates; Bruyne (58).— 
Cardiac movement in Pelecypods; Dubois (144). 
6. Respiratory System. 
[None.] 
7. Excretory and Secretory Systems. 
Secretion by albumen gland in Helix pomatia ; Camus (69): See also 
Camus, C.R. Soc. Biol, i, pp. 724 & 725.—The excretory organs in Mollusca; 
