CONTENTS. 



Transactions of the Society — 



PAGE 



I. — Observations on the Special Internal Anatomy of Uropoda 

 Krameri. By Albert D. Michael, F.L.S., F.Z.S., F.E.M.S., 



(Plate I.) Part 1 1 



II. — List of Desmids from Massachusetts, U.S.A. By Wm. West, 

 F.L.S., Lecturer on Botany and Materia Medica at tlie 

 Bradford Technical College. (Plates IL and III.) .... „ 16 



III. — Reproduction and Multiplication of Diatoms. By the Abbe 



Count F. Oastracane, Hon. F.R.M.S „ 22 



IV.~The President's Address, By C. T. Hudson, M.A., LL.D. 



(Cantab.), F.E.S Part 2 162 



V. — Description of a New Dipterous Insect, Psamathiomya 



pectinata. By Julien Deby, F.R.M.S. (Plate IV.) .... „ 180 

 VI. — A Revision of the Trichiacese. By George Massee., F.R.M.S. 



(Plates v., VI., VIL, and VIIL) Part 3 325 



VII. — Notices of New Peritrichous Infusoria from the Fresh Waters 



of the United States. By Dr. Alfred C. Stokes. (Plate X.) Part 4 477 

 VIII. — Additional Note on the Foraminifera of the London Clay 

 exposed in the Drainage Works, Piccadilly, London, in 1885. 

 By C. Davies Sherborn, F.G.S., and Frederick Chapman. 



(Plate XL) „ 483 



IX. — Description of a New Species of Megalotrocha. By Surgeon 



V. Gunson Thorpe, R.N., F.R.M.S. (Plate XII.) .. .. Part 5 613 

 X. — Note on Polarizing Apparatus for the Microscope. By 



Professor Silvanus P. Thompson, D.Sc. (Figs. 71-73) .. .. „ 617 

 XL — On the Effect of Illumination by means of Wide-angled Cones 



of Light. By Prof. E. Abbe, Hon. F.R.M.S. (Fig. 96) .. Part 6 721 



Summary of Oubkent Researches relating to Zoology and Botany (princi- 

 pally Invertebrata and Cryptogamia), Microscopy, &c., including Original 

 Communications from Fellows and Others.* 13, 186, 386, 546, 705, 923. 



ZOOLOGY. 



A. — Vebtebrata : — Embryology, Histology, and General. 

 a. Embryology. 



PAGE 



Quincke, G. — Movements of Protoplasm . . , . , . . . Part 1 28 



Masius, J. — Placenta of RahUt .. , „ 28 



GiACOMiNi, 0. — Neurenteric Canal in the Rahhit ,, 29 



Eimer, G. H. T. — Markings of Mammals ,, ,30 



Lucas, A. H. S. — Colour of Birds' Eggs „ 30 



Schultze, O. — Development of Germinal Layers and Notochord in Rana 



fusca ,, 30 



Reinhard, W. — Development of Germinal Layers, Notochord, and Mid-gut 



in Cyprinoids „ 31 



* In order to make the classification complete, (1) the papers printed in the 

 ' Transactions,' (2) the abstracts of the ' Bibliography,' and (3) the notes printed in 

 the ' Proceedings ' are included here. 



