List of Yorkshire Hemiptera- Heteroptera. 335 



Trapezonotus arenarius L. {agrestis Fall). Bubwith, Skipwith and 

 Allerthorpe Common, W. J. F. ; Scarborough, T. W. ; Rombald's 

 Moor, J. W. C. 



Drymus sylvaticus F. Thome and Wadsworth, H. V. C. ; Camblesforth, 

 H. V. C. Common in Keighley district, 191 8, R. B. 

 var. Ryei D. and S. Howden, Keighley, R. B. 



D. bnmneus Sahib. Wheatley Wood, H. V. C. 



D. piceus Flor. Scarborough, R. Lawson (i ) ; Great Ay ton, J. W. H. H. 



(7)- 

 Scolopostethus af finis Schil. Bubwith, W. J. F. ; Wheatley Wood, 



H. H. C. (6). 

 S. thonisoni Rent, {neglectus Edw.). Wadworth and Wheatley Wood, 



H. V. C. 

 5. decoratus Hahn. Bubwith, Skipwith and Allerthorpe Common, 



W. J. F. ; Wadsworth, H. V. C. ; Howden, Keighley, R. B. 

 Gastvodes ferrugineus L. Skipwith Common, W. J. F. 

 Pvrrhocoris apterus L. Sheffield, J. M. B. ; Harrogate, Anon ; M.S. 



record, 1835 (W. D. R.). 



Family Tingididae. 



Piesma capitata Wolff. Bubwith, W. J. F. ; Sheffield, J. M. B. 

 Acalypta bninnea Germ, (concinna D. and S.). Scarborough, moss on 



oak trunks, winter and spring, T. W. (i), (2), (3). 

 A. cervina Germ. Runswick, in moss, E. A. B. 

 Dictyonota tricornis Schr. Runswick, E. A. B. 

 D. strichnocera Fieb. Escrick, W. J. F. 

 Derephysia foliacea Fall. Lythe, E. A. B. 

 Monanthia ampliata Fieb. Thome, H. V. C. 

 M. Cardui L. Lythe, E. A. B. 

 M. ciliata Fieb. Scarborough, R. L. (i). 



Family Aradidae. 



Aradus depressus F. Thorne and Wheatley Woods, H. V. C. 

 A . lawsoni Saund. One specimen without locality in Lawson 's collection 

 (i) (in all probability from Scarborough, W. D. R.) 



Family Gerridae. 



Hydrometra stagnoruni L. Near Hull, J. Young (4) ; Balby brickfields 



and Sandal, H. V. C. 

 Microvelia pygmaea Duf. Sandal brickfields, on duckweed, H. V. C. 



Austwick, A. R. Sanderson. 

 Velia currens F. Near Hull, J. Young (4) ; Allerthorpe, W. J. F. 



Filey, W. J. F. ; Ecclesall Woods, Sheffield, J. M. B. ; Sandal 



Beat and Bentley Ings, H. V. C. ; Keighley to Malham, R. B. 



Ilkley, Dent, Buckden, Austwick, W. J. F. ; Askham Bryan, A 



Wright {London's Mag. Nat. Hist.) ; Teesdale, near High Force 



J. E. M. (8) ; Saltaire and Eldwick, J. W. C. 

 ■Gerris najas De G. Walton Hall, B. Morley. Dominant species in 



Leeds and Liverpool Canal, at Keighley, 1918, R. B. 

 G. lateralis Schum. Keighley Moors, R. B. 



var. costae H. S. Barden and near Skipton, R. B. ; Malham Moor, 



J. W. C. ; Bishopdale, W. J. F. 

 G. thoracicus Schum. Sheffield, J. M. B. ; Baildon Moor, J. W. C. 

 G. gibbifer Schum. Seamer Moor, W. J. F. ; Sheffield, J. M. B. ; Hors- 



forth, W. D. R. ; Bingley, R. B. 

 G. lacustris L. Kilham and Sandal brickfields, H. V. C. 

 G. odontogaster Zett. Sandal brickfields, H. V. C. ; Austwick, W. J. F. 



1921 Oct. 1 



