M O R P H 1 D .E. 



D R U S I L L A & H Y A N T I S. 



DRUSILLA BIOCULATUS. 1, 2. 



MorpJio hiocidafus Giicri/i, Voy. Coqi/iU(',PI. 17. Hi/ades Indra Boisd., Foi/. Aslrolahc, p. 158. 



Upperside. Female, white ; anterior wing rufons-white : the costal margin, the apex, and 

 the outer margin to a little beyond the middle (covering one-third of the wing), dark brown. 

 Posterior wing orange -yellow ; the costal and outer margins dark brown : a large dark brown 

 circular spot near the middle of the costal margin, inclosing two black ocelli with the pupils and 

 iris light blue ; the ocellus nearest the inner margin has a third minute ocellus attached to it and 

 inclosed within the same iris. 



Underside as above, excejjt that the costal margin of the posterior Aving is of a much 

 darker brown and is marked beyond the middle by an ocellus similar to the others, but smaller : 

 that the central spot is much larger, extending to the inner margin, and of a darker brown : that 

 the ocelli are much larger, especially that nearest the inner margin which has absorbed the 

 small ocellus mentioned above and contains two pupils. 



Expan. 3^ in. Hab. Waigiou. 



In the Collection of A. E. Wallace. 



It was not until after the accompanying plate was finished, and I believed that I had figured a new species. 

 when I ascertained that it is identical with the Morpho bioculatus of Guerin. It is not, as supposed b}' Boisduval 

 and Westwood, the female of Melanids (Dj'ctis) Agendas, from which it differs in the position of the uervures. 

 It is a Drusilla, and was placed in that genus by Dr. Boisduval under the name of Hyades Indra. The Dyctis 

 bioculatus of the " Genera of Diurnal Lepidoptera," Plate LIV.* is not the Morpho bioculatus of Guuriu but the true 

 female of Agondas ; and not being able to discover any resemblance to the butterflies then before me in the figure 

 given of Dyctis Agondas in the " Voyage de TAstrolabe," I figured it and a series of the females in the "Proceedings of 

 the Zoological Society," Annulosa, Plate LV.. under the name of JMelanitis !Melaue. D- bioculatus, though agreeing 

 with the other characters of r)rusilla, differs from all the other species or varieties in the arrangement of the disco- 

 cellular nervures of the anterior wing ; in D. Horsneldii the first and second disco-cellular uervures are very 

 short and of equal length, the third very long and curved; in D. bioculatus the first disco-cellular nervure is 

 very short, the second very long, and the third short. On examining the numerous examples of Drusilla in my 

 collection, I find that there is considerable ditference in the length of the second disco-cellular nervure ; in Hors- 

 fieldii, as stated above, the first and second disco-cellulars are of equal length : in all the others the second nervure 

 is three or four times the length of the first. 



DRUSILLA DIMONA. 3, 4. 



Upperside. ]\Iale, white ; anterior wing with the costal margin and apex broadly rufous- 

 brown : posterior wing rufous-wliite : the outer half dark lirown, with two unequal light blue 

 ocelli near the outer margin, each pupilled with light blue, the larger irrorated with black. 



Underside as above, except that the base of the posterior wing is dark brown : that the 

 large ocellus is all black with an iris of blue : that both of the oceUi are bordered with black, 

 and again encircled by a common band of orange ; and that there is a third ocellus near the 

 apex with the blue iris incomplete. 



Expan. 3-i- in. Hab. Aru. 



In the Collections of W. W. Saunders and W. C. Hewitsou. 



I have elsewhere stated my belief, and I may repeat it here (excepting D. Horsfieldii from the list in con- 

 sequence of its dilfering in the length of the disco-cellular nervures) that D. Catops and Selene of Boisduval, 

 D. Phorcas and Miltecha of Westwood, D. Jlyops and JMacrops of Felder, and D. Artemis, Anableps, and Dioptica of 

 VoUenhoven, are only varieties of Urania. D. Dimona should, very probably, add one more to the number ; it 

 differs, however, so much from all ou the upperside, that I have preferred for the present to consider it as distinct. 



