﻿122 [November, 



ascending, the middle joint tufted at its apex, the last joint longer than the tuft, 

 slender, pointed. Legs long and slender, the posterior tibise thickened with scales 

 at the middle, and at the apex. The first pair of spines in the posterior tibise 

 almost equal, the second pair shorter than the shortest spine of the first pair. The 

 anterior wings cleft more than the third part of their length. The segments 

 slender, the anterior segment with no posterior angle, the posterior segment with 

 the angle distinct. The segments of the posterior wings slender, the third segment 

 linear, and with no anal angle. The anterior wings flat, when at rest covering the 

 posterior ; the inner margin of the anterior wings not toothed, the fringe of the 

 third segment in the posterior wings with some black scales near the apex. Veins 

 of the anterior wings eight in number ; the 1st and 2nd separate, springing from 

 the base, the 3rd from the posterior margin of the cell, the 4th dividing into two 

 branches, running from the posterior angle of the cell to the posterior segment, 

 the 5th coming out near the anterior angle of the cell, and running to the posterior 

 margin of the anterior segment, the 6th either two or three-branched, running 

 from the anterior angle of the cell to the apex of the anterior segment, the 7th 

 from the anterior side of the cell, and the 8th from the base. The cell distinct, 

 closed, the transverse vein very slender, somewhat arched. The veins of the 

 posterior wings three ; the 1st two-branched, running to the first segment, the 

 2nd also two-branched, running into the second segment, the 3rd simply running 

 into the third segment. No cell. 



The Swedish species of this genus are six, viz. : — 1, O. pilosellce, 

 2, 0. hieracii, 3, O. ericetorum, 4, O. obscurus, 5, O. didactylus, and 6, 

 O. Bohemani. Of these, two only have been as yet proved to be 

 British, namely, O. pilosella and O. obscurus, although it is probable 

 that O. hieracii, if not 0. ericetorum and O. didactylus, will, if carefully 

 sought for, be added to our lists. None of the lighter coloured species 

 are met with in this list. In England we have four species only, 

 O. pilosellce, O. teucrii, 0. obscurus, and O. Icetus. 



This last was added to our lists last year by the Hon. Mr. de 

 G-rey, who caught it at Thetford, a locality already celebrated for its 

 southern types. One specimen I have (thanks to the kindness of its 

 captor) had the privilege of examining ; it certainly diifers in some 

 particulars from any specimen of Icetus which I have seen before, yet 

 as it is certainly most closely allied to, if not identical with, that 

 species, it seems most desirable to call it Icetus for the present, awaiting 

 the decision of Professor Zeller, to whom it is referred for examination. 

 The addition of one of the lighter coloured forms of the genus to our 

 British lists is, however, full of interest. On the continent, the larva 

 feeds on the flowers of Andryala sinuata ; it is probable that here some 

 species of Hieracium would be chosen. 



