653 



PROCEEDINGS 



OF THE 



QUEKETT MICROSCOPICAL CLUB. 



At the 506th Ordinary Meeting of the Club, held on March 23rd, 

 Vice-President D. J. Scourfield, F.Z.S., F.R.M.S., in the chair, 

 the minutes of the meeting held on February 23rd were read and 

 confirmed. 



Messrs. Joseph Longmore and Joseph Lovelace Ribbons were 

 balloted for and duly elected members of the Club. 



It was announced that ninety slides had been added to the 

 Cabinet of microscopic objects. Fourteen of these were pre- 

 sented by Prof. E. A. Minchin, in illustration of his paper read 

 to the tlub recently on " Some Details in the Anatomy of the 

 Rat-flea," and were in addition to those given on that occasion, 

 and seventy- two were presented by Mr. G. T. Harris, illustrating 

 his paper on Bryological Work. 



At the request of the Chairman, Mr. C. D. Soar, F.L.S., 

 F.R.M.S., then read a resume of a paper by Mr. Williamson and 

 himself, on the " British Hydracarina, genus Lebertia." Mr. 

 Soar said the genus Lebertia has been rather neglected. It 

 is certainly a difficult group. The species appeared to run 

 into one another so closelv that identification was rendered 

 very uncertain. However, Dr. Sig Thor, of Norway, at last 

 took this genus in hand. He divided it into sub-genera, 

 and went one by one through every species that had been re- 

 corded, publishing altogether in the Zoologischer Anzeiger over 

 thirty papers on this genus alone. Finding the way thus pre- 

 pared for us, Mr. Williamson and myself have worked out the 

 material which we had been collecting together for some years, 

 and the paper to-night is the result. In the posthumous memoir, 

 of Leberts, published in 1879, he describes and figures a 

 Hydracarid, which he considered new on account of the form 

 of the genital area. This mite he named Pachygaster tau- 

 insignitus. He explains the specific name by referring to the 



