66 A CATALOGUE OF THE INSECTS OF 



5. E. cupreus, Mull., Trans. CI. L, 68. 



Tyne, Irthing, and Ouseburn. "In the Wansbeck," Dr. 

 Power. 



6. E. nitens, Mull., 1. c. III., 89. 



In the Tyne, near Close House, &c. "Plentifully in the 

 Wansbeck," Dr. Power. 



MACRONYCHUS, Mull. 

 1. M. (?) parumoculatus, Hardy, T. J. Bold, Ent. Mon. Mag. 

 VII., 35; Hgdrochus parumoculatus, Trans. CI. II., 

 270. 

 Newcastle, (?) Mr. J. Hardy. 



GEORYSSID^E. 



GEORYSSUS, Latr. 

 1. G. pygmceus, Feb., Erich. 1. c. III., 502. 



Banks of streams. Common. 



HYDROPHILID.E. 



HYDROCHUS, Germ. 



1. H. brevis, Herbst, Trans. CI. II., 270. 



Rare and local. My Gosforth locality has been destroyed. 



2. H. elongatus, Fab., 1. c. 

 Rare. Boldon Flats. 



HELOPHORUS, Fab. 



1. H. rugosus, Oliv. ; H.fennicus, 1. c. I., 69. 



2. H. nubilus, Fab., 1. c. 



3. H. aquaticus, Linn., 1. c. 



4. H. granulans, Linn., 1. c. ; H. viridicollis, 1. c. 



5. H. obscurus, Muls. ; H. griseus, 1. c. 



All our local specimens are of the dark type. Mr. Crotch in 

 his catalogue unites the insects known as granulans, griseus, 

 and obscurus : if of one species, it must vary greatly in size and 

 colour. 



