MASON : SOME HEMIPTERA-HETEROPTERA OF LINCOLNSHIRE. 217 
Nabis major Costa. This generally distributed insect occurs at 
Well, Rigsby, Mumby Chapel, Mablethorpe, etc. 
Nabis ferus L. Mumby Chapel sandhills, August 21st, 1889. 
Saleby, one, September 1st, 1889 
Fam. SALDIDZA. -. 
Salda orthochila Fieb. Well, roadside near the railway gate- 
house, one, October 11th, 1891. 
Salda cincta Schiff. Well, three in brick-pits, May 18th, 1889. 
. Fam. HYDROMETRIDZ:. 
Hydrometra stagnorum L.  Farlesthorpe, abundant, April 
22nd, 1889. Sutton-le-Marsh, in a delph, July 6th, 1889. 
Gerris thoracica Schum. This generally distributed and common 
species occurs at Tothby, Sutton-le-Marsh, Bilsby, Rigsby, Well, 
Mumby Chapel, etc. 
Gerris lacustris L. This common species is generally distributed, 
and occurs at Tothby, Rigsby, Bilsby, Sutton-le-Marsh, Farles- 
thorpe, Well, Claythorpe, etc. 
Gerris argentata Schum. Well, brickpits, four, May 18th, 1889. 
Velia currens Fab. Generally distributed and common; occurs 
at Tothby, Well, Bilsby, Claythorpe, Authorpe, Farlesthorpe, etc. 
Fam. NEPID:. 
Nepa cinerea L. Mablethorpe, in rejectamenta of drain, April 
3rd, 1886. 
Fam. WOTONECTID. 
Notonecta glauca L. Common in all stagnant waters ; occurs 
at Well, Bilsby, a Mumby Chapel, Mablethorpe, etc. 
VaR. maculata sires Vell, two in brickpit, May 3oth, 1888. 
Corixa geoffr L “ ommon ; occurs at Farlesthorpe, 
Well, Bilsby, Chaythieees Sutton-le-Marsh, etc. 
*Corixa affinis Leach. Farlesthorpe, several, April 22nd, 18809. 
Corixa hieroglyphica Duf. Tothby pond, May 2nd, 188s. 
Farlesthorpe, in brickponds, April 22nd, 1889. 
Corixa sahlbergi Fieb. Alford, two in cop., April 11th, 1887. 
Farlesthorpe, in brickpits, April 22nd, 1889. Sutton-le-Marsh, 
abundant in delphs, September 3oth, 1889. 
Corixa linnzi Fieb. Farlesthorpe, in brickpit, May 25th, 1887. 
*Corixa limitata Fieb. Well, pond in orchard field, May 2rst, 
1888, and May 17th, 1889. 
Corixa przusta Fieb. Farlesthorpe, in brickpits, April 22nd, 
1889. Sutton-le-Marsh, in a delph, September 3oth, 18389. 
July 1895. 
