CONTENTS. Xlll 



7- Gastropoda. rAGK 



Heyder. Paul — Development of Pulmonary Cavity in Slug 25 



Lams, Honore — Polar Bodies in Avion empiricorum 26 



Pieron, H. — Topographical Memory in Limpet and in Calyptrma 26 



Yayssiere, A. — New Family of Molididse 26 



Marceau, F. — Adductor Muscles 26 



Thiele, Joh. — Revision of Chitons 162 



Nowikoff, M. — Eyes of Placophora L62 



Russell, E. S. — Growth of Limpet's Shell 163 



Obton, J. H. — Hermaphroditism in Crepidula fomicata L63 



Ihering, H. von — Classification and Distribution of Helicidse 163 



Dall, W. H., & P. Bartsch — Monograph of West American Pyramidellidx .. . . 164 



Poluszynski, Gustav — Abnormalities in Genital Ducts of Helix pomatia .. .. 303 



Kleixert, Max — Spermatogenesis in Helix 303 



Yles. Fred — Noises made by Snail on Window-pane 303 



Morse, Edward S. — Early Stage of Acmiea 4.")1 



Trojan, E. — Luminosity of Phyllirhoebucephala 565 



Hishop, Hilda M. — Gastropod Foot and Branchial Cavity 566 



Yayssiere, A. — New Genus of Nudibranchs . . .. 566 



,, Tentacidar Anomaly in Chromodoris elegans 566 



I'errier, Remy, & H. Fischer — Adaptive Structure of Acera 713 



,. „ ,. Gill of Bulleidse 713 



MacCurdy, H. M.— Double Snail 713 



S. Lamellibranehiata. 



Germain. L. — Malacology of Equatorial Africa 26 



Harms, W. — Postembryonic Development of Unionidse 164 



Pelseneer, Paul — Commensal Lamellibranchs 303 



Cooper, J. E., & H. B. Preston — New Bivalves from Falkland Islands 304 



Tobler — Mussels Settling in Gas-vesicle of Seaweed 304 



Seydel, E. — Byssus-apparatus of Lamellibranchs 304 



Howorth, Henry H — History of Mya arenaria 566 



Lynge, H. — Marine Lamellibranchs of Siam 566 



Arthropoda. 



Stamm. R. H. — Muscle-insertions in Authropods 164 



Calman, W. T. — Guide to Crustacea, Arachnida, Onychophora, and Myriopoda of 



the British Museum 452 



a. Insecta. 



CEstlund, O. W. — Outlines of Entomology 27 



Bourgeois, J. — Cases of Defensive Mimicry 27 



Silyestri, F. — Studies on Hymenopterous Parasites 27 



Schimmer, F. — Biology of ' Myrmecophila 28 



Krecker. F. H. — Eyes of Dactylopius 29 



Martelli, G, — Study of Puss Moth :!i» 



Vaney, C, & A. Conte — Vttellus in Silfrmoth's Eggs 30 



Deegener, P. — Intestinal Secretion in Deilephih i 30 



,, „ Abdominal Sensory Organ in Noctuidse 30 



Hirschler, Jan — Development of Mid-gut in a Beetle 30 



Crosby, C. R. — Seed-infesting Chalcis Flie* 31 



Tarnani. J. C. — Luminescence in Chironomus 31 



Fromme, W. — Pulex cheopis in Hamburg Docks 31 



Bruntz. L. — Nephrocytes and Pericardial Cells of Orthoptera 31 



Morse, Max — Nuclear Components in Sex-cells of Four Specie* of Cockroaches .. 31 



Gerard, Pol — Spermatogenesis in Stenobothru* biguttulus 32 



Tragardh, Ivar — New Phorid 32 



Sciiepotieff. A. — New Primitive Insect 32 



Theobald, F. W.— Pests of the Hop 33 



