( 209 ) 



tlipse insects. T. wiias (Doherty) iiiiil /»•/'« (I\(ilier), liovvevpr, are not alwavs 

 recognisable without the lielp of locality, and are only local forms of T. hnliphron 

 (Boisd.). 



Both sexes of stum linger I (Ruber) have red pectoral spots underneath the wings. 

 The abdomen is coloured as in riedeli ; the yellow colour of the underside is perhaps 

 a little more extended. 



(3. The wliite, adnervular streaks of the forewings below are longer than in 

 T. riedeli (Kirsch) ; those which border the second median nervule reach the cell. 

 The first discal spot of the hindwings is larger thnn in ricdtii. but shorter than 

 in critoH (Feld.). 



5 . The two specimens before me (one of which is lent to me by Dr. Staudinger) 

 vary somewhat in the amount of white on the forewings and in the size of the yellow 

 markings to the hindwings ; there are no yellow submarginal spots within the broad 

 black border of the liindw'ings. 



Hah. Loeang; Babber (W. Doherty, July 1892) (1 d', 1 ?). 



15. Troides plato (Wall.) [(?,?]. 



(J. <lniith,ipln-ii plat'' Wallace, Tr. Liiiit. Sm: Lnml. XXV. p. 40. n. 13 (18l.i.'.) (Timor) : Standing., 



Iris IV. p. 74 (1891) [Timor ; phto is a slight local form of a-ituii (Feld,)]. 

 cJ ?. Ovnitkiiptem plato. Rdber, Tijihrhi: v. Ent. XXXIA^ p. 2Gil (18'JI) (Timor). 



Both sexes are devoid of the red pectoral hairs underneath the wings ; but in 

 one of my females there stand some red hairs at the side of the metasternum. 

 Wallace {l.c.~) says that j)lato has uo red collar. This is a mistake ; most probably 

 the head of Wallace's specimen was bent backwards, as in consequence of sncli a 

 po.sition of the head the red collar is concealed by the black hairs of the neck. The 

 black basal two-fifths of the wings are sharply limited in a regularly arched curve. 



i. The adnervular white streaks of the underside of the forewings are very 

 broad, broader than in any allied species, but not of constant size. The scaling of 

 the upperside is less dense between the discoidal and median nervules, so that this 

 part of the wing has a peculiar appearance, being semi-transparent. The size of the 

 yellow cellular spot of the hindwings is rather varial.ile ; in .*ome specimens that spot 

 reaches along the median vein as far as the origin of the lower median nervule, while 

 in others it reaches .scarcely bej'ond the second median vein. The jiosti>rior spot (the 

 sixth) of the di.scal series is also inconstant in length and breadth. 



?. The forewings vary much in the amount of white: the apical fourth or third 

 of the cell, and the bases of the cellules at the extremity of the cell, are above feebly 

 suffused with white ; or these parts and geminate streaks at the submedian and lower 

 median veins are conspicuously white, so that there is a discal white patcli extended 

 between costal and inner margins, inwardly concave and sharply limited, exteriorly 

 gradually shading off and extending along the veins. In a specimen in Dr. Staudinger's 

 collection the apical tw-o-fifths of the cell are white, exclusive of two broad and a narrow- 

 longitudinal streak, and the white region outside the cell is nmcli ii'diic'cd in con- 

 sequence of the black internervular streaks being long and very prominent ; the black 

 streaks between the two lower median nervules and between the lower median and 

 submedian veins are especially dark, and join tlie black basal region wilh<iu( assuming 

 a paler Colour ; hence the black basal region is much less regularly convex than in 

 other /emf'/e.s and the male. 



The subdiscal black spots of the hindwings are in one form of the fe\i\<de well 

 marked, the four posterior ones being partly or entirely surrounded with yellow ; in 



