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settling exclusively on flowers on high trees. The baitwhich 

 attracted the $ $ was ignored by the 2 ? . They flew 

 by themselves, and seldom came near the $ $ except 

 when the latter were in pursuit of them. 



The individuals of the species seem to be most abun- 

 dant by rivers, or in sunny places by the dry beds of 

 of springs, being in largest numbers during the cool wet 

 monsoon ; so we are informed by Burbridge, who is speak- 

 ing of Borneo. 



In an interesting paper by Mr. S. B. J. Skertchly 

 (contained in the Annals and Mag. Nat. Hist., Vol. IV., 

 6th Series, p. 210). " On the Habits of certain Bornean 

 Butterflies," he tells us that " in the eastern part of 

 North Borneo, which is practically an unbroken virgin 

 forest, intersected by innumerable creeks and small 

 streams, and some fine rivers .... among the 

 many species which delight in the sunshine or the shady 

 forest edges, forest paths, or clearings, where the light is 

 stronger than in the forest depths, and when sunshine is 

 close at hand, are Ornithoptera and Hestice. These 

 occasionally make excursions into the jungle, but their 

 haunts are by the river sides. O. Brookiana is a rare 

 butterfly in this part of Borneo ; but I have seen it in 

 several parts of the Darval Bay Peninsula .... 

 In the mountain region of the headwaters of the River 

 Segama I saw a pair hovering above an orange-blossomed 

 tree, and watched them courting for 20 minutes. The $ 

 was sipping the flowers, vibrating its wings rapidly like a 

 hawkmoth, the vivid green markings flashing out as the 

 sun played on them. Then the 2 sailed down with 

 stately flight, showing her white spots clearly, and 

 commenced to woo. For a long time they circled over 

 us about 6 inches apart, the 2 always uppermost and a 

 little behind, so that she could see the emerald feathers 

 of her mate. She did all the wooing. The flight was a 

 sailing motion with a peculiar tremor of the wings, very 

 unlike the quivering while feeding. The 2 during the 

 whole time pointed her abdomen downwards. A solitary 

 0. flavicollis was about, and made several feeble attacks 

 on the lovers, which they totally ignored. At length they 

 settled high up in the tree, and united, the 2 still upper- 

 most." 



In the same article Skertchly says that the 2 2 of Hestia 

 lynceus, H. lenconde, v, labuana, also Ideopsis daos woo the 

 $ $ . Very likely this exception to the ordinary rule may 

 yet be found more often to obtain than has hitherto been 

 suspected. Years ago, in New Granada, I saw evidences 

 that the 2 of the beautiful little Eubagis postverta was the 

 first to do the seeking ; for by holding a very fresh $ in 

 my hand I found it quite easy to capture the 2 2, several 

 of which would be hovering over me, to my great astonish- 

 ment ! 



T. Brookeana 2 var. Eleanor, (Fr. Walker) Trans. Ent. 

 Soc. Lond. Pt. I, 1889, p. 75- 



This var. Dr. Walker says resembles in some 



particulars the ordinary $ type, and also has some 

 resemblance to the 2 type. "The 7 hastate metallic 

 marks of the <? are represented in this var. by 5 nearly 

 similar shaped patches of the same size, the 6th and 7th 

 above being smaller, and in some lights appearing almost 

 as streaks of green. The green patches of the hind 

 wings are more distinctly divided by a black line 

 than in the <?, corresponding in this respect with the 

 posterior wings of the $ described by Hewitson, as at the 

 middle divided by the nervures, which are . . . This 

 latter is more a female than a male character. The 

 green colour of both wings is brighter than in the ordinary 

 female, but not quite so vivid as in the male ; indeed it 

 is in some lights a much warmer golden green than in the 

 normal type of either sex." [The shape of the hastate 

 patches of the Primaries does, however, approach those 

 of the markings in a female in the Hewitson collection.] 

 " The greatest difference between this var. and the 

 ordinary female consists in the total absence of the dusky 

 pencilling near the apex of the anterior wings, and the 

 very indistinct figuring of the row of spots of the posterior 

 wings, which causes the ordinary female to resemble a 

 Diadema. The border of this var. has only 2 small white 

 spots on each side of the 1st subcostal nervule of posterior 

 wing instead of 3, and the remaining 4 grey brown spots 

 are more indistinct. The underside of Primaries with the 

 same dusky pencillings as in the normal form, but the 

 whitish markings of the secondary wings resemble those 

 of the male; indeed they are fewer in number — the 

 indications of the 2nd inner and fainter band being 

 slighter than in the normal types of the male or female. 

 On the underside of the Secondaries the blue markings 

 extending from the base are of the ordinary type. On 

 the Primaries, (underside) the blue markings predominate 

 over those of the ordinary female ; on those of the 

 ordinary female there is rather more metallic green." 



Possibly if we were able to obtain as large a number of 

 females as of males we might meet with every inter- 

 mediate variation between the markings and colours of 

 the two sexes, just as we do in the forms of the mandibles 

 and armatures of the sexes of some of the Lamellicorne 

 Coleoptera — the Copridce and Lucanidce for example. 



The specimen of this interesting and instructive 

 variety was obtained by accident by Dr. Francis Walker : 

 its antennae were absent, and it is rather worn. I thought 

 it was best to figure it just as it was set, although it may 

 not look quite so well in the plate. I am greatly indebted 

 to Dr. Walker for the opportunity of figuring the 2 

 females which enrich my plate, and who most kindly 

 allowed me to have the use of them as long as I needed. 



The figures of the <? are from a specimen in my own 

 collection, one of the first two I possessed, which were 

 liberally ceded to me some years ago by Mr. William 

 Watkins, to whom I have much pleasure in dedicating 

 these two drawings. The other 7 examples in my 

 museum do not contain any differences worthy of note. 



