Hydro'ptilidm lelongiivj to the Euroinan Fauna. 327 



O.falcata, Mort. 



Probably Avidespread. Recorded from Switzerland by 

 Dr. Ris, and taken by Mr. Eaton in Algeria. I have just 

 seen a $ from Tangiers, Morocco {Lord Walsingham), in 

 Mr. McLachlan's collection. 



O.friri, Klap. 



Taken in Norway by Eaton and myself. I have also 

 seen a $ taken by King at Rotliiemurchus, Inverness- 

 shire. 



0. tridella, Klap. (E. M. M., 2nd Ser., vol. vi, p. 168). 



Described by Klapalek from Bohemia; it has since been 

 taken in two localities in Scotland (Wigtownshire and 

 Perthshire). 



Oxyethira. mirabilis, n. sp. 



In the $ the last dorsal segment has the margin rounded with a 

 small, rather deep notch in the middle. The sides of the last segment 

 are semi-circularly produced forming opposing valves (within which 

 are placed the appendages), giving the whole segment an elongated 

 appearance. The ventral plate has tlie whole outer margin occupied 

 by a deep V-shaped excision ; the plate becomes slightly broader 

 towards the base. Above this plate is a large, prominent cover 

 convex beneath and slightly turned downwards ; on either side of 

 the ventral plate is a slender aristate appendage. Tlie penis has the 

 apex much swollen for a considerable space, the expansion being 

 greatest at the tip ; it is accompanied bj' a pair of acute sheaths. 

 Ventral tooth small and acute. 



Hob. Loch Eigheach, Rannoch, Perthshire {Morton). 



A single specimen was taken, and as this was made in ' o 

 a microscopical preparation before I could satisfy myself 

 with regard to its structure, I am unable to give any 

 details as to its general appearance. The genitalia are 

 very different from those of any other known Oxyethira, 

 and the species probably forms an addition to the already 

 numerous groups of which this extensive genus consists. 



The locality which produced this interesting species is 

 an expansion of the river Gaur in the Moor of Rannoch. 

 It was taken along with a few 0. sagittifcra, Ris (also new 

 to the British fauna), and 0. costalis v/as also present. I 

 was unable to revisit the locality, and my wife, who went 

 there twice subsequently, failed to find either of the desired 

 species, but took 0. tristclla, Klapalek. 



