liO Kenneth J. Morton. 



than 2°"^ and 4'''; P* closed by a very oblique nervule and there- 

 fore somewhat acute at base, 3'"'' angulate al base; 2°*^ and 4"' 

 sub-equal in lenglh, 2"^* broader than 4*''; 2°*^ straigtly truncate, 

 4*^ truncate in a very slightly oblique manrier; ö**^ longest of all, 

 closing nervule long very oblique, and Iherefore base very acute; 

 upper branch of cubitus furcating slightly before middle of dis- 

 coidal cell. Påle, subhyaline, faintly testaceous at apex; neura- 

 tion påle; pterostigma brownish. 



In the ef the 9*^ segment is much developcd dorsally; 

 viewed from above its ouler margin is deeply excised, the 

 angles on either side acutely produced and shining black; in 

 the excision, the hairy tips of the inlermediate appendages, and 

 the bare notched apices of the inferior appendages are visible; 

 the lov^er portion of the superior appendages appears at the 

 side of the produced angles of the segment in the shape of 

 obtuse hairy lobes. Viewed from the side, the 9'^ dorsal seg- 

 ment is semicircularly excised, the excision being occupied by 

 the large superior appendage, the external margin of which is 

 sinuous, the lower margin nearly straight. Intermediate appen- 

 dages large approximate, flattened, subquadrate seen from side, 

 apices slightly thickened and hairy. Inferior appendages long, 

 slender, ascendent, viewed from beneath they are convergent, 

 but the apices diverge, are sub-acute and notched before the tip. 

 Penis large, a long apical portion divided into two blades flatte- 

 ned and slightly dilated at apex; sheaths with a large club-sha- 

 ped head, hairy, pectinate; there appears to be a projection on 

 the upper edge and the sheaths are therefore probably furcate 

 and Limnophilelbrm. All the appendages are shining blackish at 

 apex. 9- unknown. 



Length of body, cT, 10 mm. Expanse 32 mm. 



Described from o ne of two males taken by Dr John Sahl- 

 berg at Mandojärvi end of lune 1S94. I have to express my 

 gratitude to Dr Sahlberg for allowing me to describe the insect 

 and also for his kindness in adding it to my coUection. 



A very interesling species bearing resemblance to Stenophy- 

 Jax (J-ihadlcolep/u-; Wall.) alpestris Kol., but the connection is only 

 superficial. Mr MLachlan who has kindly examined the insect 

 points out that the 9"^ dorsal segment (not often visible in Limno- 



