16 A CATALOGUE OF THE INSECTS OF 



8. H. obliquus, Fab., 1. c. I., 59. 



9. H. confinis, Steph. ; H. lineatus, Aube. 

 Gosfortb, Marsden, and plentiful in Talkin Tarn. 



10. H. UneatocoUis, Marsh., Trans. CI. I., 60. 



PELOBIADES. 



PELOBIUS, Schon. 

 1. P. Hermanni, Fab., 1. c. I., 64. 

 " Once near Newcastle, by Mr. Hewitson," G. Wailes, Esq. 

 Has not since been met with. A doubtful native. 



HYDKOPOKXDES. 



HYPHYDRUS, III. 

 1. H. ferrugineus, Linn. ; H. ovatus, 1. c. 



HYDROPORUS, Clair. 



1. H. incequalis, Fab., 1. c. 63. 



2. H. quinquelineatus, Zett., Nat. Hist. Trans. I., 318. 

 Prestwick Carr and Gosfortb Lake. September. 



3. H. reticulatus, Fab., Trans. CI. 1. c. 



Apparently rare. I have only seen two or three local speci- 

 mens. 



4. H. geminus, Fab., 1. c. H., 268. 

 Pond at Gosfortb, but very rare. 



5. H. duodecimpustulatus, Fab., 1. c. I., 60. 



6. H. depressus, Fab. ; H. elegans, 1. c. 



We have two varieties (species ?) of tbis insect : a large dark 

 one inhabiting "tarns," or small lakes, in hilly districts; the 

 other a smaller pale one, which is found in eveiy stream in the 

 district. 



7. H. Davisii, Curt., 1. c. 61. 



8. H. assimilis, Payk., 1. c. 60. 



9. H. septentr ion nlis, Gyll., 1. c. 61. 

 10. H. rivalis, Gyll., 1. c. 



