438 MR. H. H. DRUCE ON [May 17, 



(with the markings much the same) of a decided grey, not greyish 

 brown as in N. vitiensis, and with two large black spots on the hind 

 wing, placed as in that species and encircled with light metallic 

 cserulean blue (greenish in N. vitiensis), but without the yellow 

 outer rings. A few blue scales at the anal angle. 



2 . Upperside : allied to N. vitiensis, but the blue on the disk 

 darker and much restricted, not appearing on the hind wing, and 

 the large anal spots not showing through as they do in that species. 



Underside as male. 



Head, thorax, and abdomen concolorous with wings. Legs 

 greyish ; antennae brown, spotted with white. 



Expanse, S 1^ in., 2 1^ in- 



Samoa Is. (Mathew) {Mus. G. ^ S.). 



A pair of this insect in Messrs. Godman and Salvin's collection are 

 the only specimens I have seen. Although allied to N. vitiensis, it 

 has several points of distinction. 



Nacaduba nov^-hebridensis, sp. u. (Plate XXVII. figs. 7, 8.) 



Allied to N. vitiensis, Butl. 



d • Upperside a somewhat lighter and more silvery shade of 

 violaceous blue. Underside pale ashen grey, with the markings, 

 which are arranged much as in JV. vitiensis, less distinctly prominent, 

 and having on the margin of the hind wing one large black spot 

 only, which is placed between the two lower median nervules, and 

 which has its outer edge only bordered with metallic blue, and is 

 not encircled with bright yellow as in N. vitiensis. A few blue 

 scales at the anal angle. 



2 . Upperside much like that sex of N. vitiensis, but the blue 

 area rather more extensive and considerably lighter in colour, and 

 having on the hind wing a marginal row of pale grey crescent- 

 shaped lunules. Underside as male. 



A very short black tail on the lower median nervule, which is 

 occasionally tipped with white. There is very little trace of the 

 greenish scales at the base of the wings below. 



Head, thorax, and abdomen concolorous with wings. Legs 

 greyish ; antennae brown, spotted with white. 



Expanse as N. vitiensis. 



Pentecost I., Mallicollo I., New Hebrides ( Woodford). Vate I., 

 New Hebrides (Mathew) (Mus. G. ^ S.). New Hebrides (B. M.). 



A male from Vate Island, obtained by Mr. Mathew, has the 

 black spot on the hind wing quite small ; otherwise I notice no 

 variation in the good series before me. 



This insect is distinguished at once from N. vitiensis and also 

 from -Z\r. samoensis by having a short linear tail. 



Nacaduba florinda. (Plate XXVII. fig. 12.) 



Lampides jiorinda, Butl. Ann. & Mag. Nat. Hist. (4) xx. p. 354. 

 Lifu I., Loyalty Is. (B. M.). N. Australia (Mus. D.). 

 The type in the British Museum and a single specimen in our 

 own collection, which agrees exactly with it, are the only two I have 



