5 B. Poppius. [XLVII 



Helophoridae. ^) 



56. Helophorus rugosus Oliv. Orkney: Kirkwall, four speci- 

 mens. 



57. H. aquaticus L. Shetland; Orkney; ten specimens. 



58. H. aequalis Thoms. Orkney, foiir specimens. 



59. H. mulsanti Rye. Shetland, one specimen. 



60. H. aeneipennis Thoms. Sketland; Orkney; several speci- 

 mens. 



61. H. griseus Herbst. Shetland; Orkney; taken in abundance. 



HydropMlidae. O 



62. Anacaena globulus Payk. Shetland, two specimens; Ork- 

 ney, at Kirkwall, 15. VII, two specimens. 



Sphaeridiidae. O 



63. Cercyon littoralis Gryll. Shetland; Orkney; several speci- 

 mens. 



64. C. marinus Thoms. Shetland; Orkney: Kirkwall; five 

 specimens. 



65. C. analis Payk. Orkney: Kirkwall, one specimen. 



66. C. flavipes Fabr. Shetland; Orkney; five specimens. 



67. C. melanocephalus L. Shetland; Orkney; several speci- 

 mens. 



68. C. quisquilius L. Orkney, two specimens. 



69. C. unipunctatus L. Orkney: Kirkwall, two specimens. 



70. Megasternum obscurum Marsh. Shetland, several speci- 

 mens; Orkney, at Kirkwall. 



(jyrinidae. 



71. Gyrinus natator L. Shetland: Trebisterness, 11. VII, 

 three specimens; Orkney: Kirkwall, 15. VII, three spe- 

 cimens. 



^) The niost specimens are long ago determiaed by D:r D. Sharp. 



