British Species of the Genus Stenus. 139 



Sp. 13. Slenus cemulus, Erichs. 

 Whittlesea Mere— T. V. W. 



Sp. 14. Sic7uis canaliculatus, Gyll. 



Highgate, July — G. R. W. Deal ; Fleetwood, Lancashire ; 

 Whittlesea Mere ; Boston ; Slapton Ley ; Holyhead ; Lowestoft ; 

 Headley— T. V. W. Horning, Norfolk— J, C. Banks of the 

 Brent, near Kingsbury, September; Northampton (Mr. R. N. 

 Greville)— E. W. J. 



Sp. 15. Stenus opactis, Erichs. 



Two specimens in Mr. Waterhouse's collection, which he has 

 reason to believe are from Northumberland. 



Sp. 16, Stenus pusillus, Erichs. 

 Highgate — G. R. W. Bedfordshire ; Ferriby ; Cransley ; and 

 Deal — T. V. W. Downham, Norfolk — J. C. Northampton (Mr. 

 R. N. Greville)— E. W. J. 



Sp. 17. Stenus exiguus, Erichs. 



Spridlington, Lincolnshire ; and Rosnalee, county of Cork — 

 T. V. W. 



Sp. 18. Stenus speculator, Erichs. 

 Common in the neighbourhood of London — G. R. W. Rosnalee* 

 county of Cork ; Treneglos, Cornwall ; Spridlington ; Cransley ; 

 Mablethorpe, coast of Lincolnshire ; Dublin ; Pencraig, S. of 

 Anglesea; Southend— T. V. W. Suffolk; Norfolk; and Wilt- 

 shire — J. C. Berwickshire (Mr. J. Hardy) ; Northampton (Mr. 

 R. N. Greville) ; copiously throughout the year at Colneyhatch, 

 Finchley, &c.— E. W. J. 



Sp. 19. Stenus providus, Erichs. 



Whittlesea Mere ; Isle of Wight ; and Cransley — T. V. W. 

 Colneyhatch and Finchley, among moss, late in the autumn and 

 in winter — E. W. J. From moss, January, Wimbledon Common 

 —G. R. W. 



Sp. 20. Stenus argus, Grav. 

 Spridlington— T. V. W. 



