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Moenkiiaus, W. J., & C. H. Eigenmann — Studies in Variation 410 
Bumpus, H. C. — Variations and Mutations of the Sparrow's Egg in America . . 410 
Duncker, G. — Variability in Fishes 411 
Tornier, G . — Polydactylism and Syndactylism in Mammals 411 
Werner, J. — Polydactylism in Swine 411 
McIntosh, W. C . — Intelligence of Fishes 411 
Meerwarth, Hermann — Coloration of Birds 412 
Dastre, A., & N. Floresoo — Hepatic Pigments 412 
Muller, O . — Adaptations of Respiratory Organs in Aquatic Mammals 412 
Haldane, J. S .— Secretion and Absorption of Gas in the Swimming-bladder and 
Lungs 413 
Burne, R. II . — Porus Genitalis in Myxinidse 413 
Krause, W. — Sensitiveness to Light in Amphioxus 413 
Plate, L . — Petromyzont with Large Eyes 413 
Vernon, H. M . — Relations between Marine Animal and Vegetable Life 413 
Blackwell, Elizabeth — Scientific Method in Biology 411 
Morgan, C. Lloyd — Heredity and Instinct 414 
Marion, A. F . — Litoral Fauna and Pisciculture at Marseilles 411 
Tasciienberg, O . — Bibliotheca Zoologica 415 
IliECKEL, Ernst — Reaction in Zoology 415 
Tunicata. 
Metcalf, M. M. — Neural Gland in Cynthia papillosa 415 
Herdman, W. A . — Australian Tunicata 415 
Pizon, Antoine — Development of Double Larva of Diplosom : d e 415 
INVERTEBRATA. 
Mollusca. 
a. Cephalopoda. 
Burne, R. H . — Notes on Structure of Sepia 410 
y. Gastropoda. 
Burne, R. II. — Reno-Pericardiac Pore in Ampullaria TJrceus 410 
Bumpus, H. C. — Variations and Mutations of Littorina 410 
Moore, J. E. S . — Gastropods of the Great African Lahes 410 
„ „ Typhobia 417 
Boutan, L . — Peripheral Glandular Organ of Helcion pellucidum 417 
5. Lamellibranchiata. 
Plate, L . — Are there Septibranehiate Bivalves ? 417 
Stempell, W . — Structure of Leda 418 
Bruyne, (J. de — Phagocytosis in Development 418 
Bryozoa. 
Harmer, S. F . — Development of Tubulipora 418 
Arthropoda. 
Pantel, P . — Cleavage of the Cuticle in Moulting 418 
Kellogg, V. L . — Facetted Eyes of Arthropods 419 
a. Insecta. 
Tutt, J. W . — Hybridising Species of Tephrosia 419 
Haviland, G. D . — Termites 420 
Harris, W. H . — Teeth of Diptera 420 
Dubosq, O . — Sensory Nerve-Cells of Insects 420 
Janet, Charles — Peculiar Gland in Ants 420 
Pissarew, W. J . — Heart of Hive-Bee 421 
Hamann, O . — Brain of a Cave-Beetle 421 
Comstock, J. H., & J. G. Needham — Venation of a Typical Insect Wing .. .. 421 
Pictet, Arnold— Groivth of Butterflies' Wings 421 
Heymons, R . — Composition of Insect' s Head 421 
Paulmier, F. C . — Chromatin Reduction in Hemiptera 421 
Heymons, R . — Development of Food-Canal in Lower Insects 422 
j3. Myriopoda. 
Heymons, R . — Development of Chilopoda 422 
5. Arachnida. 
Carruccio, M . — Sarcoptes minor 422 
Thomas, Fr . — Heliotaxis of Larval Mites 422 
Piersig, R . — German Hydrachnidee .. 422 
