458 JOURNAL, BOMBAY NATURAL HIST. SOCIETY, Vol. XXVL 



the head large, the eyes smooth, the antennae moderately long and half ringed 

 with white below. The larvae are rather abnormal in shape, the pupa also, in 

 that they have no body-band and have the last segment dilated and shaped 

 like a horse's hoof ; all the larvae feed on Loranthus or Viscum of different 

 species as far as is known — argentea, deva and cleobis have been bred and 

 their transformations are known. The genus is known to occur in Lidia, 

 Burma and Ceylon but has not yet been recorded from the Malay Peninsula 

 or further east. 



170a. Camena argentea, AuriviUius. — Male. Upperside : both wings black 

 with the disc overlaid with brilliant, hardly metallic, deep, azure blue. 

 Fore wing : the blue occupies a short streak from base above the subcostal veins, 

 the whole of the cell except the lower outer corner and a narrow edge, 

 inside the discoidal nervules, the inner area from base below the cell as far as 

 two-thirds the length of the wing including a streak between veins 2 and 3 and a 

 small lobe at the middle of the inner margin. A few longish, grey, decumbent 

 hairs on iimer margin near base. Hind wing : the blue scaling occupies the 

 whole of the disc below the cell including the lower, outer corner of the ceU, from 

 base to very near the outer margin, leaving an increasing breadth of black 

 from vein 4 to vein 6 ; the anal area along the inner margin beyond vein 1 is 

 brown and covered with a dense clothing of decumbent, rather long, grey hairs 

 which encroach on the blue above at the base of the wing ; half the black area 

 from base outwards above the blue is shining (sexual mark) and clothed with 

 differently formed scales from the rest . There is a thread-like tail at the end 

 of vein 2 and another at the end of vein 1, both black, tipped with white, 

 both about 8'5mm. in length, the former directed horizontally outwards, the 

 latter straight in continuation of vein 1. There is also a small, rounded lobe 

 on the inner margin just inside vein 1 which is slightly bent down and is 

 black amongst the grey hairs, with a touch of the blue of the disc on its 

 outer side. Underside : burnished silver like a new ruj)ee. Fore wing : the area 

 below the cell and vein 2 slightly fuscous, especially on the basal two-thirds of 

 the wing where the scales are differently formed to the rest and there is a 

 large tuft of dark-brown hair appressed against the surface, directed upwards 

 from the edge of the lobe mentioned above to just above vein 1. There is a 

 thin, light-brown, postdiscal line composed of outwardly slightly concave 

 lunules between veins 1 and 7, sometimes with the ends indistinct. Hind 

 wing : burnished silver with a similar, postdiscal, light-brown line from 

 inner margin to vein 8, the lunule in the last interspace (the uppermost) 

 displaced inwards as also that in interspace 1, though those in these lowest inter- 

 spaces 1 and 1-a are very sagittate. The area outside this line in interspaces 2, 

 1, 1-a is whitish and there is a black spot in 1-a and 2, the latter crowned with 

 yellow, the latter with a yellow streak along its inner upper margin. Cilia of 

 both wings below : white with the bases brown becoming black towards the anal 

 angle. Antennae black, banded white below and with the tip longly orange ; 

 head black mixed with white, the eyes bordered white ; palpi white, the uppei- 

 side of terminal joint black ; thorax and abdomen above, black ; the former 

 covered with blue-grey, decumbent hairs and some blue scaling, the latter with 

 some blue scaling at sides ; below white. — Female. Upperside : as in the male 

 except that the blue of the upperside of the hind wing occupies the whole 

 cell and above at base and is much paler, though stiU metallic. Indeed, 

 in fresh specimens, there is sometimes difficulty in telling which is which 

 without looking at the midersides. Underside : pure, smooth, light grey 

 becoming, however, after some weeks, sullied by a slight pinkish or indian- 

 red blush ; the post-discal lines are plainer than in the male, the yellow crowns 

 to the anal spots more diffuse and larger. Expanse : male, 32mm. ; female, 

 35 mm. 



