GEBYDUS. 291 



incomplete macular brown band, each spot in the bands mai-gined on 

 the inner and outer sides by slender black lines ; finally a subterminal 

 transverse series of short slender black threads. Antennae, head, 

 thorax and abdomen as in the cf . 



Easp. <$ $ 39-46 mm. (J -52-1-80*). 



Hob. Within our limits, Teuasserim. Recorded from Moulmein 

 and the extreme south of Mergui. Occurs in Malacca ; Sumatra ; 

 Java ; Amboina ; Sula ; Flores : New Guinea. 



A very variable insect, the tone of the ground-colour on the 

 underside in some very dark, in others lighter and brighter ; the 

 form of the markings does not vary, but in some specimens they 

 are very distinctly defined. 



603. Gerydus ancon, Doherti/, J. A. & B. 1889, p. 438, pi. 23, fie. 8 ; 

 de N. Butt, Ind. iii, 1890, p. 23. 



J. Upperside, fore wing: basal half or a little more, white, the 

 outer half jet-black ; the white area encloses a broad, short, black 

 central streak extended inwards to a dark greyish shading, super- 

 posed on the white area at the base of the wing : outwardly the 

 black streak extends slightly along vein 3 and touches the outer 

 black area, the inner margin of which follows an oblique curve 

 from the end of the basal third of the costa to vein 3, thence 

 outwards for a short distance and sinuously downwards to the 

 dorsal margin ; on this margin the black area covers about one- 

 fourth of the length from the tornus to the base. Hind wing : 

 greyish brown, darker towards the costal margin ; an obscure, 

 broad, white medial streak beyond the apex of the cell not 

 reaching the terminal margin. Underside, fore wing: base, costa, 

 apex and terminal margin broadly earthy brown with a slight 

 rusty tinge ; remainder of the wing white except a large earthy- 

 brown somewhat diffuse patch below the cell at base of wing and 

 a postdiscal oblique broad black band that extends from below the 

 costa to vein 3 ; lastly a subterminal transverse line of minute 

 black spots. Hind wing : ground-colour uniformly brown with a 

 rusty tinge ; some obscure mottlings of darker brown on the basal 

 area, a few scattered black subcostal spots and a short horizontal 

 macular dark brown band that extends from vein 3 to just short 

 of the dorsal margin. Antennae, head, thorax and abdomen pale 

 brown ; beneath : the palpi, thorax and abdomen ochraceous. 

 $ . Upperside : similar to that of the c? , but the ground-colour on 

 the hind wing very much darker and uniform ; on the fore wing 

 the white area is similar to that in the c? , but is divided into two 

 portions by a black patch which occupies the whole base of the wing 

 aud extends in a broad black band along veins 2 and 3, coalescing 

 with the external black area on the wing. Underside . similar to 

 that of the <3 , but on the fore wing the ground-colour on the 

 costa and terminal area darker brown with no rusty tint, but 

 with a few obscure macular mottlings ; the patch at base of the 

 wing is dark blackish brown and is extended along the vein and 

 joins the oblique postdiscal short dark brown band. On the hind 



