\IQ [October, 



some yoimn; plants of Oaliiim verum growing somcivliat isolated on apiece of ground 

 from wbicli tlio tnrf had been removed, and at the roots of these I found- not only 

 C^. deeussata, but also U. trivia — five of the former and four of the latter. This 

 then is the secret of their life, and v^ithout knowledge of it, patience, and knowing 

 w'hat to look for, the channc of getting the creatures is very slight indeed. It is only 

 by the keenest looking that they can bo seen, for they lie without motion, and do 

 not jump when touched. All the examples of U. decussata are $ , and of U. trivia 

 are $ , and they are doubtless the sexes of one species, as Fieber has put them in 

 his " Katalog," but under the new specific name of Qermari, for which I do not see 

 the necessity. Germar, in his " Magazin der Entomologie," iv, 56, 3, has described 

 another species, Z7. liigens, vrhich he says was taken with U. decussata, and although 

 Fieber cites it as distinct, this may be because he did not know it, and it is to me a 

 question whether or not it is any more than a form of decussata. — J. W. Douglas, 

 Lee : 2oth August, 1875. 



EEVISION OF THE LEPIDOPTEROUS GENUS EUSEMIA, WITH 

 DESCRIPTIONS OF NEW SPECIES. 



BY ARTHUR G. BUTLER, F.L.S., F.Z.S., &c. 



From the date of the piiblicatiou of Walker's Museum Catalogue 

 to tlie appearance of Dr. Boisduval's Mouograpli of the AgarlstkloB 

 hardly anything had been done towards describing the beautiful and 

 numerous new species of this genus. 



The above-mentioned paper, however, professed to add five new 

 species, whilst it overlooked nine, previously recorded by AValker and 

 Moore ; the errors of this "Monograph " have, however, been already 

 pointed out by Mr. Kirby (Cist. Eut., pp. 343-347) and by myself 

 (Ann. and Mag. Nat. Hist., s. 4, vol. 15, pp. 135-144), whilst at the 

 same time, I published eight descriptions of new forms. It therefore 

 now only remains to extricate the species from the confusion into which 

 they have got, which can be best done by giving a complete list 

 of them. 



Genus ETJSEMIA, Dalman. 



1. — E. YicTiiix Group. 



1. EUSEMIA SILIIETENSIS. 



J^usemia silhctensis, Butler, Ann. and Mag. Nat. Hist., s. 4, vol. 

 15, p. 139, n. 1 (1875). 



Silhet (BouUcday and Argent) . Type, B. M. 



2. EtJSEMIA TTEIA:N'TniN^A, n. sp. 



Wings above blue-black ; primaries with two stccl-bluo spots at the base, and 

 one or two at the cud of the cell ; two large creamy yellowish spots, placed obliquely 



