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Show 1895.] MR. H. H. DRUCE ON BORNEAN LYCEENIDEE. 609 Mr. de Niceville supposes it to belong to this genus (J. A. vol. lxiii. pt. ii. no. 1, p. 43, 1894). JACOONA, Distant. JACOONA JUSANA, sp. n. (Plate XXXIV. fig. 3 d •) d • Allied to J. anasuja, Feld. Upperside-fore wing : outer margin convex, and with the blue fascia which is beyond the cell large and semicircular, extending from the costal margin across the wdng down to the first median nervule and almost reaching the outer margin ; the inner marginal blue area is also much more exteusive, and reaches nearly to the anal angle. Hind wing wdth the blue area also much more extensive ; the black marginal spot betwreen the first and second median nervules much smaller; a distinct black line along the centre of the tail (not always present), and wdth the apex considerably more produced. Underside ochraceous hoary, but without the rufescent brownish; the outer margins as in J. anasuja, and with the third spot of the inner series and the corresponding spot of the outer series small and straight; a prominent black streak at the base of the costal nervure in the fore wing. 2 much like that sex of N. amrita, Feld. Upperside white; anal area more extensive, and the black spots more inclined to separate. Underside as cf, but yellowish ochraceous. Expanse, cf If, 2 2} inches. Saudakan (Mus. Druce) ; Labuan ( Waterstr., Mus. Staud.). Messrs. Godman and Salvin possess a male J. anasuja, Feld., from Sumatra (Sachs), also a female from Singapore. The females in this genus have the same number of subcostal nervules in the fore wing as the males, but the first branch is entirely separate from the costal nervure. They closely resemble those of N. amrita, with which species they have doubtless often been confounded, and like that species possess a tail on the lower median nervule (which is, however, shorter) ; but they can be at once distinguished from that species by the presence on the underside of the prominent black basal streak in the fore wing. JACOONA METASUJA, sp. n, (Plate XXXIV. fig. 4 cf •) Iolaus metasuja, Staud. M S. d. Allied to J. jusana, paler and brighter blue with greenish reflections; the band on tbe fore wing, beyond the cell, much narrower and shorter, and the blue basal area shorter. Underside as in J. jusana. 2 • Upperside differs from 2 jnsana by the white anal area being more extensive and tbe black spots entirely separated. Underside as cf • Expanse, cf lyV 2 % inches. Kina Balu (Waterstr.). Types Mus. Staud. The greenish reflections and the narrow blue apical band give J. metasuja a very distinct appearance. The females of the three PROC. ZOOL. Soc-1895, No. X X X I X . 39 |