CONTENTS. 



PAOB 



New Type of Poly zoa — Cephalodiscus Parti 44 



Vitality of Fresh-irafer Poly zoa „ 45 



Observations on Living Poly zoa „ 45 



Individual Variation in Ascidians Part 2 195 



Gemmation in Didemnida and Botryllidm „ 196 



Anatomy and Histology of Ciona intestinalis „ 196 



Mediterranean and Atlantic Bryozoa „ 198 



Development of Ova in Ascidians Part 3 356 



Structure of Ovary of Phallusiadx „ 356 



Embryonic Development of Salpidx „ 356 



Anatomy and Histology of Brachiopoda Testicardinia . . „ 358 



Ova of Ascidians Part 4 497 



Oxycorynia, a new Synascidian Genus „ 498 



Calcareous Stellates from off Deep-sea Organisms .. . . „ 616 



Hypophysis Cerebri in Vertebrata and Tunicata .. .. Part 5 630 



Origin of the Follicular Cells ,, 630 



Symbiosis of Bryozoa and Actinia; „ 635 



Development of Salpa: and Pyrosomata „ 642 



Structure of Anchinia „ 642 



Development of Brachiopods „ 643 



Structure of Tunicates Part 6 830 



Alteration of Ascidian Ova » 831 



Artliropoda. 



Olfactory Lobes in Vertebrates and Higher Arthropoda . . Part 4 491 



Structure of the Nucleus j, 494 



Eyes of Arthropoda Part 5 644 



Results of Decajpitation in Insects and Myriopoda . . . . „ 645 



Use of an adhesive substance by Arthropoda in jumping . , „ 646 



o. Insecta. 



Polar Cells of Insects .. Parti 45 



Embryonic Development of the Bombycini , 46 



Asymmetry of the Nervous System in Larvae „ 46 



Vitality of Insects in Gases „ 47 



Mouth-organs of Sucking Insects „ 48 



Scent- Organ of Papilio „ 49 



Anatmny of Aphides „ 49 



Lampyridae « 51 



Colour and Pattern of Insects Part 2 198 



Development of the Excretory Generative Ducts in Insects „ 204 



Anatomy and Development of the Ovary in Diptera .. ,. „ 205 



Systematic Characters of the Labrum of Syrphidce . . . . „ 205 



Genital Organs of the Orthoptera „ 205 



Male Genital Ajjpendages of the Saltatory Orthoptera . . „ 206 



Circulation of Blood in the Larva of Hydrophilus. (Fig. 35) „ 208 



Early Developmental Stages of Ovum in Insecta . . . . Part 3 3G0 



Innervation of the Respiratory Mechanism in Insects . . „ 362 



Histology of Insect Wing-muscles „ 362 



Flight of Insects „ 363 



Locomotion of Insects on Vertical Glass Surfaces .. . . „ 363 



Salivary and Olfactory Organs of Bees „ 364 



