111 



CONTENTS. 



PART No. 54, APRIL 1904. 

 Papers. 



PAGE 



F. J. Cheshire, F.R.M.S. Abbe's Test of Aplanatism, and a Simple 



Apertorneter derived therefrom (Illustrated) 1 



F. P, Smith. The Spiders of the Sub-family Erigoninae (Plate 1) . 9 

 J. Rheixberg, F.R.M.S. An Overlooked Point concerning the Re- 

 solving Power of the Microscope (Illustrated) .... 21 



D. J. Scourfield, F.R.M.S. Synopsis of the Known Species of 

 British Fresh-water Entomostraca. Part III. Ostracoda, Phyllo- 

 poda, and Branchiura (Plate 2) ....... 29 



C. F. Rousselet, F.R.M.S. On a New Fresh-water Tolyzoon from 



Rhodesia, LophopodeUa thomasi, gen. et sp. nov. (Plate 3) . .45 



G. Massee, F.L.S. President's Address. Some riant Diseases caused 



by Fungi 57 



V. Vavra, Ph.D. On the Phyllopods Limnadia lenticularia (L.) and 

 LimnetU brachyura (O.F.M.). and their Occurrence in Bohemia 

 (Plate 1) 63 



Notes. 



W. J. Wood, F.R.M.S. Note on Ebonising Laboratory Tables . . 67 

 Rev. H. A. Soames, M.A., F.R.M.S. Note on the Sertulariidae of 



Kent and Sussex 69 



Proceedings, etc. 



Proceedings from October 16th, 1903, to February 19th, 1904, inclusive 71 



Thirty-eighth Annual Report (for 1903) 75 



Report of the Treasurer (for 1903) 80 



PART No. 55, NOVEMBER 1904. 



Papers. 



T. B. Rosseter, F.R.M.S. The Genital Organs of Taenia sinuosa 



(Plate 5) 81 



W. Wesche, F.R.M.S. Some New Sense-organs in Diptera (Plates 6, 7) 91 

 C. D. SOAR, F.R.M.S. Two New British Water-mites (Illustrated) . 105 

 F. P. Smith. The Spiders of the Erigone Group . . . .109 



