EUPLCEINJE. 27 



Genus RADENA. 



i?a(fe«a, Moore, Lepidoptera of Ceylon, i. p. 3 (1880). Distant, Eliopal. Malayana, p. 9(1882). Moore, 



Proc. Zool. Soc. Lond. 1883, p. 223. 

 Danaus (part), Latreille, Gen. Crust, et Ins. iv. p. 201 (1809). 

 JJestia (part), Hiibner, Verz. bek. Schmctt, p. 15 (1816). 

 Danais (Radena), Marshall and De Niceville, Butt, of India, &c., I. p. 32 (1882). 



Imago. — Forewing moderately long ; triangular; first subcostal branch emitted 

 at about one-third before end of the cell and anastomosed to the costal in the 

 middle, second branch emitted immediately before end of the cell third and fourth 

 branches at equal distances beyond ; discocellulars concave, upper slightly bent 

 before the middle, producing a very short discoidal spur within the cell from the 

 angle, lower discocellular slender at its upper end ; upper radial from end of the 

 cell in a line with the subcostal, lower radial from the middle ; median veins at 

 equal distances apart ; submediau with a slender short lower basal veinlet. Hind- 

 wing broad, somewhat triangular; costal margin long, nearly straight, abdominal 

 margin long ; costal vein very convex from the base and then extending straight 

 along edge of the margin ; cell long, broad ; subcostal and median branches very 

 wide apart. No scent-pouch in male. Antennae longer than in allied genera, with a 

 more gradually thickened and blunt club ; apical joint of palpi long. 



Larva. — With two pairs of fleshy filaments. 



Type. — R. similis. 



RADENA VULGARIS (Plate 5, fig. 1, la, $ <}). 



Danais OT^Zpam, Butler, Entom. Monthly Mag. xi. p. 164 (1874). Moore, Proc. Zool. Soc. Lond, 



1878, p. 822. 

 Radena vulgaris, Distant, Ehopal. Malayana, p. 10, pi. 1, fig. 8 (1882). Moore, Proc. Zool. Soc. 



London, 1883, p. 223. 

 Danais (Radena) vulgaris, Marshall and De Niceville, Butt, of India, &c., I. p. 32, fig. ^J (1882), 

 Euplwa similis, ZLnken-Sommer, Nova Acta Acad. Cur. 1831, p. 175 {nee Linn.). 



Imago. — Male and female. Black ; markings bluish-white. Forewing with a 

 lengthened streak from base of cell, followed by an irregular indented mark beyond ; 

 a costal streak followed by three narrow spots, a discal series of narrow, elongated 

 spots, a subapical series, a submai'ginal row of rather large spots, and a marginal 

 row of minute spots, two lengthened streaks below the cell, and a short streak at 

 lower base of the wing. Hindiving with long narrow streaks within the cell, a 

 discal series of long and narrow streaks, a submarginal row of narrow spots, and a 

 marginal row of minute spots. Thorax and head, white spotted ; palpi and legs with 

 white streaks, abdomen above brown, paler beneath. 



Expanse, 3 to 3j inches. 



Habitat.^ — -Burma ; Mergui. 



Distribution. — Within our limits B. vulgaris has not been recoi'ded west of 



E 2 



