HEY< LIST OF YORKSHIRE COLEOPTERA. 45 



5. S.W.— Hebden Bridge, 183 1 (S. Gibso7i); Wakefield 

 {E. B. Wriggksivorth). 



Ilybius ater DG. General and often plentiful. 



2. N.E.— Whitby {H. Crowthe?). 



3. N.W.— Studley {E. A. Waterhoiise). 



4. Central. — Askham Bog, Clifton Ings, Doncaster 

 {W.C.H.). 



5. S.W. — y^ldk&'a^^di^E. B. Wrigglesworth). 



Ilybius obscurus Marsh. Locally abundant, 



4. Central. — Askham Bog, in plenty, 1856 {^W. Hey); 

 still very abundant in the same place, 1886 {JV.C.H.) ; 

 Se\hy (JV.C.If.). 

 Ilybius guttiger Gyll. Locally abundant. 



4. Central. — Askham Bog, 1856 and 1868 (JV. Hey); 

 Strensall Common, 1885 (f]>:C.i^). 



Liopterus agilis F. Very local. Abundant in Askham Bog. 

 2. N.E. — Marten, 1828, in pools on the hills near 

 Marton Lodge, but very scarce (Z. Rudd, Sieph.,111., June 

 15th, 1829, ii. 194). 



4. Central. — Askham, 1830 {A. Wright); also in 1856 

 and 1868 {W. Hey). Still very abundant in the same 

 locality, 1887 (W.C.H). 



5. S.W. — Hebden Bridge Watercourse, 1831 (S. Gz'hon, 

 Loudon's Mag., 1832, v. 555). 



Agabus bipustulatus L. One of the commonest and most 

 generally distributed of our water-beetles, swarming in 

 ponds and slow ditches throughout the year. 



1. S.E.— Bridlington (f]^C^). 



2. N.E. — Coatham Marsh (W.C.H); Scarborough 

 (B. Lawsoii). 



3. N.W.— Studley {E. A. Waterhouse). 



4. Central.— York, Sheriff Hutton, &c. (f^C^.). 



5. S.W.— Wakefield {E. B. Wrigglesworth) ; Hebden 

 Bridge (^S". Gibson). 



