88 Falconer: Yorkshire Arachnida in 1912-13. 
G. vegetans Degeer. — One example, Wholestone Moor, near Slaithwaite, 
July 1913. 
Bdella vulgaris Herm. — Ainley Place, Slaithwaite, October 1913. 
Trombidium holosericeum Linn.— Seven Arches, Saltaire, April 1911 
(F. Booth) ; two examples. Spurn. (See The Naturalist, Sept. 1908, 
P- 333)-* 
T. nmshami George. — Selby (Mr. Musham), recorded, figured, and 
described in The Naturalist, November 1913, pp. 383-4. 
T. bicolor Herm. — Several examples along the course of the Ainley Place 
Beck from Barrett Clough to Clough House Wood ; and one in 
Lower Stones Wood, Stocksmoor, October and November, 1913. 
Reported so far from one other British locality, Can wick, near Lincoln. 
(See The Naturalist for November 1913, page 384* and January 
1914, page 11.) 
Ottonia bicolor Herm. — Nont Sarah’s, near Slaithwaite, and Ainley Place, 
May 1913. (See The Naturalist, February 1910.* ) 
It is quite evident from the nomenclature that there is 
some confusion of identity between this and the previous 
species. I referred the difficulty to Dr. George, and the follow- 
ing notes are based, with his kind permission, on his reply. 
He is personally of opinion that they are distinct mites, and 
that Hermann never described the so-called O. bicolor, which 
he (Dr. George) published a few years ago on the authority 
of Professor Borlese, to whom he submitted a specimen. In 
many respects the two mites agree pretty well in their anatomy, 
but to his mind there can be no doubt of their being distinct, 
unless it can be shown that O. bicolor is T. bicolor in an early 
stage of nymph. This, however, he does not think to be the 
case, so that failing direct proof by breeding. 0 . bicolor will 
require to be re-named. 
O. clavata George. — Ingleton, 1912 (F. B.). (See The Naturalist, Decem- 
ber 1909).* 
O. sheppardii George. — ‘ Yorkshire localities,’ not specified, recorded in 
The Naturalist, 1913 (Aug. t pp. 2S7-8) ; two examples on the summit 
of Ingleborough, June 1913. I have also taken it in Wicken Fen, 
Cambridge. 
Rhyncolophus communis George. — Keighley (R. Butterfield) ; garden at 
Saltaire, and in Hurst Wood, Shipley (W. P. W.) ; Grassington 
(Mr. Johnson) ; Chandler’s Whin, York. (See The Naturalist, 
December 1910, pp. 427-8, and October 1912, pp. 304-5).* 
R. niger George. — Rivock, Keighley (W. P. W.)— recorded in The 
Naturalist, August 1912, p. 252— the type specimen. It is wrongly 
entered as R. communis George in the Index for the year, December, 
P- 396. 
Ritteria nemorum Koch. — Cottingley Wood, Hurst Wood, Elslack, 
gardens at Saltaire, Shipley Glen (W. P. W.) ; Barrett Clough, 
Ainley Place, Clough House Wood and Scout Wood, Slaithwaite ; 
Lepton Great Wood, Huddersfield ; Defier Wood, Cawthorn ; 
Shacklcton Wood, Hebden Bridge ; summit of Ingleborough. 
(See The Naturalist, May 1907, October 1912, and February 1913).* 
R. mantonensis George. — One example, Ainley Place, September 1913. 
* References to Dr. George’s papers, but not to Yorkshire mites. 
Naturalist, 
