48 TJie Scott it Ji Naturalist. 



LYPE. 

 PH^EOPA Steph. Not uncommon. Slowly running streams. 

 Distribution — East, oooooooo 

 West, o Clyde Argyle o o 



PSYCHOMYIA. 



PUSILLA F. Common, Large rivers. 



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

 West, o Clyde o o o 



RHYAOOPHILID^E. 



CHIMARRHA. 

 MARGINATA L. Common. Rapid streams and waterfalls. 

 Distribution — East, o o o o Moray o o o 

 West. Solway o o o o 



RHYACOPHILA. 

 DORSALIS Curt. Very common. Streams. 

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



West. Solway Clyde Argyle o o 

 SEPTEMTRiONis M'Lach. Common. Usually by streams with 



rocky beds. 

 Distribution — East, o Forth o o o o o o 



West, o Clyde o o o 

 OBLITERATA M'Lach. Common. Streams. 

 Distribution — East, o o Tay o o o o o 



West, o Clyde o o o 



This insect appears in the autumnal months. 

 GLOSSOSOMA. 

 boltoni Curt. Not very common. Rivers. 

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



West. Solway o o o o 

 VERNALE Pict. Common. Rivers. 



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

 West. Solway Clyde Argyle o o 



AGAPETUS. 



FUSCIPES Curt. Common. Small streams. 



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



West, o Clyde Argyle o o 

 COMATUS Pict. Common. Rivers. 

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



West. Solway Clyde Argyle o o 



