54 CATALOGUE OF THE INSECTS OF 
as dry situations, and takes readily to the water when pursued, 
even venturing to conceal itself at the bottom, where it has the 
power of remaining submerged for a considerable time. 
2. H. nivauis, Payk. 
Steph. Manual, No. 1138.—H. Gylenhalii, Steph. lust, 
Mand.,1., 62. 
“Twizell."—P. J. Selby, Esq. Scotswood Dean, and “ Castle 
Eden Dean.”—G. Waziles, Esq. Ryhope Dean.—Mr. W. Pea- 
cock. Abundant under stones and rejectamenta by the side of 
the Derwent. May—August. 
This has all the subaquatic habits of a Peryphus. 
43. Bunrutsa, Bonelli. 
1. B. munrrpunctata, Linn. 
Steph. Illust. Mand., ii., 36.—Curtis, Brit. Ent., pl. 326. 
“Prestwick Car, common.’—G. Wailes, Hsq. It was not un- 
frequent in 1826 and some subsequent years. 
44, Euapurus, Fab. 
1. E. cuprevus, MWegerle. 
Steph. Lllust. Mand., ui., 34. 
In marshes and by sides of ponds. “Newcastle.”—G. Wailes, 
Esq. “Twizell."—P. J. Selby, Esq. Prestwick Car; on the 
Wear above Southwick. May and June. 
2. HE. riparius, Linn. 
Steph. Illust. Mand., ii., 35. 
Sides of ponds. “ Newcastle."—G’. Wales, Hsq. “ Twizell.” 
—P. J. Selby, Esq. Prestwick Car and Gibside. “At the 
Reeds, near Houghall.”—Ornsby’s Durham. 
45, Norropuitus, Duméril. 
1. N. aquaticus, Linn. 
Steph. Illust. Mand., i1., 32.—yv., 388. 
Common. 
2. N. vrprauts. Steph. 
Steph. Lllust. Mand., v., 388. 
Common. This appears to be a variety of the preceding. 
3. N. Bieutratus, Lab. 
Steph. Illust. Mand., ui., 33.—v., 389. 
Common. 
