hey: list of Yorkshire coleoptera. 41 



Hyproporus planus F. One of the commonest species of 

 the genus, inhabiting ponds in great plenty. 



1. S.E. — Brough (^. ^. Wriggleswortli). 



2. N.E.— Scarborough (^.j5. ff^); Marske ( ^KC.Zf.)- 



3. N.W.— Studley {E. A. Waterhouse). 



4. Central. — Common throughout the York district 

 {W.C.H.). 



5. S.W.— Wakefield, Hebden Bridge {E.B. IV.). 

 Hydroporus melanocephalus Steph. {=pubescens Gyll.). 



Another very common species, though records are deficient. 



3. N.W.— Studley {E. A. Water/iouse, 1879). 



4. Central.— York (/^/C^y.). 



5. S.W. — Hebden Bridge Watercourse {Sam: Gibson, 

 February 23, 1832). ' 



Hydroporus nigrita F. 



5. S.W. — Hebden Bridge Watercourse, 1831 (5. Gibson 



m Loudon's Mag. N. II., i^2^2,v. $$S)' 

 Hydroporus melanarius Sturm. 



4. Central. — Kskh2imBog{II. Hutchinson, A'^xW 1872, 

 vide E. M. M., June 1872, ix. 12). 

 Hydroporus at riceps Crotch {=melanocephalus Gyll.). This 

 species is recorded by L. Rudd, from Yorkshire, without a 

 more definite locality {Steph., III., June 15th, 1829, ii. 193). 

 4. Central. — Askham Bog ( W. Hey, H. Hutchinson). 

 Hydroporus tristis Payk. 



4. Central. — Askham Bog, not common ( W. Hey, 

 1856; H. Hutchinson, 1872). 



5. S.W. — In a small pond or tarn on Midgeley Moor near 

 Hebden Bridge, July 1852 {T. V. Wollaston, Zool. 1855, 

 xiii. 4655. 



Hydroporus neglectus Schaum. A very scarce and local 

 species, only recorded in this county from the neighbour- 

 hood of York. In 1872, Archdeacon Hey and Mr. H. 

 Hutchinson took it abundantly in a pond near Strensall 

 Common. It also occurs sparingly at Askham Bog. ; 



