70 TnuiAitdioiis. 



Fam. Sericostomatid.e. 



Serocostoma personatum, K. & S. (Spenceii). — Belongs to a difficult 

 genus. M'Lachlan, in his latest work, admits 

 provisionally 16 species. This is the only British 

 species. 



Silo pallipes, Fab. — A common species. 



Lepidostoma hirtum, Fab. (Mormonia hirta). — River Nith. 



Fam. Leptocerid^. 



Odontocerum albicorne, Scop. — Lochaber. 



Leptocerus annuUcornis, Steph. — A local species : it has not been 



found in the Glasgow district ; but I have taken 



it by the Forth, near Stirling. 

 „ dissimilis, Steph. — Near Loch Kindar. 

 ,, UUneahis (hlfasciaius). — This and the next species are 



very similar, but are readily distinguished by the 



present species having the fore wings covered with 



a dense black pubescence, and more especially by 



the absence of white vertex. 

 „ Alhifrons, L. — Has the vertex clothed with snow-white 



hairs — hence its name — and the pubescence of 



the fore wings is dark brown. 

 Mystacides azurea, L. (nigra). — The nomenclature in this geniis 



has been entirely changed by M'Lachlan in his 



" Revision." The other two British species both 



occur in our district. 

 CEcetis testacea, Curt. (Setodes testacea). — Conhuith. The only 



other recorded Scottish locality is in the Glasgow 



district. 



Fam. Hydropsychid^. 



Hydropsyche instahilis. Curt. — Cargen Water. 

 Polycentropus flavomaadatus, Pict. —Lochaber. 



Fam. Rhyacophilid.e. 



Rhyacophila dorsalis, Curt. — An abundant species by every burn 



and running stream. 

 Glossosoma holtoni, Curt. — Lochaber. Mr King has also taken this 



species at Maxwell town Loch. 



