i3 



LINCOLNSHIRE WATER MITES: 



THIRD LIST. 



C. F. GEORGE, M.R.C.S., etc., 

 Kirton-in-Lindsey, Lincolnshire. 



Since my last paper on Water Mites, published in ' The 

 Naturalist,' May 1901, there has appeared in Germany a most 

 important work on this subject, a volume forming- the 13th 

 'Lieferung' of an extensive work called 'Das Tierreich.' It 

 deals with the Hydrachnidae and Halacaridae of the world. The 

 Hydrachnidae is written by Dr. R. Piersig, of Annaberg, who 

 gives a list of all the literature of the Hydrachnidae known to him 

 in any language, brought up to the 15th of April 1901, and 

 a description of every Water Mite certainly known, also very 

 accurate and laborious analytical tables of the genera and 

 species. Considerable alterations are' made in the classification 

 which will require the careful attention of the student; for 

 instance, the generic name Laminipes has been g"iven to mites 

 hitherto known as Pio?ia, Neumania instead of Cochleophorus, 

 and Piona is substituted for Curvipes. From what I have said 

 some little idea may be formed of the great value of this book 

 to the hydrachnologist and the immense labour and learning 

 bestowed upon it. 



The year has not been to me a very successful one in some 

 respects, still I have a few more species to add to my Lincoln- 

 shire list, which have all been taken by myself in the same district 

 as the former ones. 



Eulais (Eylais) georgei (Soar). See 'Science Gossip,' x^ugust 

 1901, pp. 68 and 69. This species is the one described in 

 my first list as Eylais exte?idens. I circulated a mounted 

 specimen (which I still possess) in the Postal Microscopical 

 Society in November 1882, but it is needless to say it 

 returned without any important remark or criticism. In 

 1896 Professor Kcenike, of Bremen, published some observa- 

 tions on Eylais which gave a great impetus to the study of 

 this genus over the whole world, so that Dr. Piersig now 

 describes no less than 35 species as certain, mentions two 

 as uncertain, and one as a variety, and yet had not recorded 

 this species, as it was only described by Mr. Soar in August 

 1901 ; and I have about half-a-dozen different species or 

 varieties, taken and mounted by myself this year, whose 



1902 January i. 



