PEOF. J. O. WESTWOOD ON THE UEANIID^. 525 



Except in being more bronzed in the colour of the wings, this species scarcely differs 

 from A. agathyrsus. 



Hah. North China {Fortune). In Brit. Mus. 



Sp. 6 (17). Alcidia agathtrsus. 



Nyctalemon agathyrsus, Kirsch, Mittheil. zool. Mus. Dresden, Heft ii. p. 129, pi. vii. figs. 8, 8a. 

 Hub. New Guinea. In Mus. Dresden. 



Sp. 7 (18). Alcidia boops, sp. nov. (Plate LXXXVII. fig. 1.) 



Alls supra cyaneo-nigris, anticarum dimidio basali costse striolis, fascia submedia postice 

 intus incurva, fasciolaque subapicali cseruleo-viridibus ; posticis fascia media dilatata 

 ejusdem coloris, cauda caeruleo-alba, ciliis albis. Capite maximo, ano maris fulvo bar- 

 bate. Expans. alar, antic, unc. 4f . 



Hab. Aru (Wallace). In Mus. Hopeiano Oxonise. 



This insect agrees so entirely with A. agathyrsus that I should have had no hesitation 

 in so naming it ; but the extraordinary size of the head and eyes, far exceeding those 

 of any other males of the genus which I have examined, seems a sufficient character to 

 allow it a distinctive specific rank, although I am aware that in certain insects which 

 are distinguished by the large size of their heads there is much difierence in the extent 

 of this character. I know no such instance, however, amongst Lepidopterous insects. 



Sp. 8 (19). Alcidia metaurus. (Plate LXXXVII. fig. 2.) 

 Nyctalemon metaurus, HopfFer, Neue od. wen. bek. Schmett. 11. Heft, pi. 2. figs. 3, 4; Boisduval, 



Rev. Zool. 1874, p. 18. 

 Alcides orontes, Guenee, Sp. Gen. ix. p. 14. 



Note. — The figure given by Hopffer is far too highly coloured. I have therefore 

 given a new representation of it. It may be distinguished by the very broad conical 

 central fascia of the fore wings. 



Hab. New Guinea and north of Australasia. In Mus. Hop. Oxoni^, 



Sp. 9 (20). Alcidia aurora. 



Alcides aurora, Salvin & Godman, Proc. Zool. Soc. 1877, p. 150, pi. xxiii. figs. 5, 6 

 Hab. New Ireland, Duke-of-York Island. In Brit. Mus. 



Genus 4. Lyssidia, Westw. 



(Details, Plate LXXXV. figs. 19, 20.) 



Lyssa, Hiibner (Verz. 1816), nee Lissa, Leach, Gen. Crust. (1815). 

 Nyctalemon, pars ult., Dalman, Boisduval, Rev. Zool. 1874, p. 16. 



VOL. X. — PART. XII. No. 4. — June 1st, 1879. 4d 



