18/1.] MR. A. G. BUTLER ON A NEW GENUS OF LEPIDOPTERA. 725 



basali ochraceo tincta : poslicce nebula discali obsoleta ; area 



basali ochraceo tincta: exp. alar. unc. 1, lin. 6. 



Two examples of the male of this species were in the collection 



sent by Mr. Ansell from Kinsembo, a list of the species of which 



appeared in the Transactions of the Entomological Society for 18/0 



(see Tr. Ent. Soc. p. 527. n. 9). 



Genus Belenois, Hiibner. 



1. Belenois meldole, sp. n. 



Affinis B . thysae, minor ,• anticce margine externo duplo angustiore 

 et inter venas interrupto ; punctis discalibus obsoletis ; poslicce 

 margine hand maculato. 



Alee anticce subtus haud nigra maculates ; area basali rufescente : 

 posticce puncto minuto costali, altero valde indistincto subapicali, 

 tertio indistincto inter nervulos secundum et tertium medianos et 

 quarto vix distinguendo inter nervulos primum et secundum, sub- 

 marginalibus squamosis nigris, aliter haud nigra maculatce: exp. 

 alar. unc. 2, lin. 2. 



Allied to B. thysa, HopfTer (Papilio sabrata, Doubleday), but 

 quite distinct. 



2. Belenois severina. 



Papilio severina, Cramer, Pap. Exot. iv. pi. 338. fi°-s. G, H 

 (1782). 



A number of specimens of this species came also in Mr. Ansell's 

 collection. 



Genus Eerp^enia, Butler. 



1. Herp.enia tritogenia. 



Pieris tritogenia, Klug & Ehrenberg, Symb. Phys. Ins. ii. pi. 8. 

 figs. i/, 18. 



3. Description of a new Genus of Lepidoptera allied to 

 Apatura. By Arthur G. Butler, F.L.S., F.Z.S., &c. 



[Eeceived November 8, 1871.] 



Whilst verifying the Apaturce in the collection of the British 

 Museum, my attention was arrested by an extraordinary develop- 

 ment of the anal appendages in one of the species. This led me to 

 examine with care the rest of the Butterflies referred to this genus ; 

 and as I found that none of them exhibited the same peculiarities of 

 structure, I came to the conclusion that it must be separated as a 

 distinct genus. Further comparison has revealed differences in the 

 antennse and neuration, which, taken together with peculiarities of 

 coloration and in the outline of the wings, will obviate that diffi- 

 culty of determining the genus which is so much to be deplored in 



