BIOLOGY. 
Moll . 23 
7. Excretory and Secretory Systems. 
Kidneys of Mollusca ; Pelseneer (242). — Secondary kidney in larval 
Opisthobranchs ; Mazzarelli (210). — Formation of epiphragm in Helix 
aspersa ; Allman (2). 
8. Nervous System. 
Nerve terminations in the smooth fibres of the muscular sheath to the 
vas deferens of Limax subfuscus and agrestis; Bisogni (25). — Nervous 
system of Phyllobranchus borgninii ; Trinciiese (353). — Nervous system 
of the mantle of Mactra elliptica , Brown ; Freidenficlt (110). 
9. Sensory System. 
Visual organs of the Mollusca ; Hornell (145). — Histology of the 
optic lobes of Cephalopoda ; Lenhoss^k (177). — Eyes of Pecten and 
Lima ; Schreiner (294). 
10. Generative Organs. 
Genitalia of Mollusca ; Pelseneer (242). — Genitalia of some Corsican 
Slugs; Pollonera (271). — Genitalia of Cerion yumaense ; Pilsbry & 
Vanatta (264). — Spermatogenesis of Paludina vivipara ; Auerbach 
(10). — Notes on the female organs of Neritina jluviatilis\ Gilson (119). — 
Hermaphroditism in Patella : Gemmill (117). 
11. Embryology* 
Experiments on Molluscan eggs ; Fujita (112). j — Development of 
Cephalopoda\ Faussek (102). — Eggs and young of Cephalopoda ; Hornell 
(144). — Experimental studies on Gastropod development ; Crampton 
(65). — Development of Limax maximus ; Meisenheimer (211). — On the 
Nebenkern and the formation of the spindle in the spermatocytes of 
Helix ; Lee (175). — On the so-called achromatin substances in the fer- 
tilized egg of Physa fontinalis ; Kostanecki & Wierzejski (170). — 
Protovum and polar globules of Amphorina coerulea ; Trinchese ^354). — 
Yolk-lobe and centrosome in Fulgur carica ; McMurricii (195). — Em- 
bryonic development of the radula in Paludina vivipara ; Bloch (28). — 
Larval Pelecypods of the Plankton of the Atlantic ; Simroth (305). — 
Embryology and development of Scioberetia australis ; Bernard (22). — 
Organization of larva and post-larval development of a ship-worm 
\Xylotrya fimbriata ] ; Sigerfoos (297). 
12. Phylogeny and Classification. 
Spirida is allied to the Sepia-Loligo group and not to GEgopsids, and 
was derived from Ammonea ; Lonnberg (193). — Pilsbry (252) proposes 
two new main divisions of Pulmonata monotremata, viz. : Aulacopoda 
(= Zonitidcc, Limacidce , Endodontidcc , Arionidcc , and Philomycida ?) and 
Holopoda (= IJelicidce, Dulimulidce , Cylindrellidce , Pupidce , and Acha- 
tinidae). — Baker (12) proposes a new classification of the Muricidce. — 
Classification of Pelecypoda; Woodward (386). 
13. Stray Notes. 
Molluscan terminology ; Feltgen (103). — Habits of Octopus digueti ; 
Rochebrune (278). — Carnivorous habits of Limax ; Oldham, Zoologist, 
1896, p. 264 ; Theobald, t . c . p. 307. — Biological notes on Helix pomatia ; 
