The Scottish Naturalist. 239 



xanthodes McLach. Not uncommon. Ponds and lochs. 



Distribution — East. 00000000 

 West. Sohvay Clyde 000 



ltjnatus Curt. Very common. Standing water. 



Distribution — East. o o Tay Dee Moray Sutherland 



Orkney o 

 West. Sohvay Clyde 000 



Some of the specimens from the Highlands are very dark and well marked. 



elegans Curt. Very rare. Frequents heathy and moorland 



districts. 



Distribution — East, o o Tay 00000 

 West. 00000 



POLITUS McLach. Scarce. 



Distribution — East, o Forth Tay 00000 

 West. 00000 



Said to frequent both standing and running water. 



ignavus (Hag.) McLach. Locally common. Moorland lochs. 



Distribution — East, o Forth Tay o Moray 000 



West. 00000 



NIGRICEPS Zett. Locally common. Moorland lochs. 



Distribution — East, o Forth Tay o Moray 000 



West. 00000 



This insect does not appear until well on in the autumn and hence may be 



overlooked. 



centralis Curt. Very common almost anywhere. Marshy districts. 



Distribution — East, o Forth Tay Dee Moray Sutherland o o 



West, o Clyde Argyle o o 



VITTATUS F. Very common almost anywhere. Marshy districts. 



Distribution — East, o Forth o Dee Moray Sutherland 



Orkney o 

 West, o Clyde 000 



Specimens from Sutherlandshire are very grey instead of the usual straw colour. 



