12S [June, 



resembles the race of icarns with which it occurs. The only definite 

 distincti(in between alexins and ab. icarinus of icarus, that appears on 

 a superficial examination is, that icarinus is sporadic, whilst alexins 

 being a distinct species, may be in greater or less numbers. General- 

 ising from the few localities from which I have specimens I suppose 

 it to range from France to Central Asia. 



If any one meeting with it (and, if not as common as icarus itis 

 certainly not rare) will be good enough to send me a few specimens 

 of it and of the associated icarns, it would materially assist me in 

 elucidating the species. 



Betiila, Rei^ate: 

 May nth, 1912. 



DESCRIPTIONS OF NEW EXOTIC LYCMNIDM AND HESPERIIDM* 

 BY HAMILTON H. DRUCE, F.L.S., Ac. 



LYGjENIJD^. 



Sheffieldia, gen. nov. 

 Closely allied to Cooksonia, from which it differs by veins 5 and 6 having a 

 common origin from the end of the cell, conseqiiently the 

 upper discoidal nervule, which is present in Cooksonia, is 

 wanting. The palpi and antennae are as described in 

 Cooksonia. 



Type : Sheffieldia neavei, sp. nov. 



I think that both this genus and Cooksonia 

 should be placed in the sub-family Lipteninss. In 

 Venation of shiffiddia. one of the specimens examined vein 6 is stalked 

 from vein 5 in the fore- wing some distance beyond the end of the cell. 

 Sheffieldia neavei, sp. nov. 

 J . Upper side orange-bi\fP, with the basal area of the fore-wing and the 

 whole of the hind-wing overlaid with brick-red. Fore-wing : apex rather broadly 

 black, the black gradually narrowing towards the tornus ; a large black costal 

 blotch spread over the end of the cell and beyond and narrowing along the 

 costa to the base. Hind-wing : termen broadly and evenly black, a clearly 

 defined black spot at the ui>per end of the cell. Cilia of fore-Aving, black ; of 

 hind-wing, chequered. Under side : fore-wing diiU orange, reddish in the cell ; 

 pale yellow towards the apex, which is pale yellow inwardly, bordered with 

 white, and again with black, and divided by the black nervules. The black 



* The two coloured plates in preparation illustrating tlie insects now described will be 

 issued in a future number as soon as ready. — H. H. D. 



