BYPOLTGMNIN^. 133 



presence of the " male mark " separates the species of Ops from all those of Tajurin. 

 (de Niceville.) 



OPS OGYGES. 



Plate 729, figs. 2, ^ , 2a, 9,2b, $. 

 Ops ogyges, de Niceville, Journ. Bo. Nat. Hist. Soc. 1895, p. 298, pi. P, figs. 36, (J , 37, ? . 



Imago. — Male. Upperside, both wings iridescent pale cerulean-blue in some 

 lights, iridescent emerald-green in other lights. Forewing with the base of the costa 

 pale ochreous ; the outer half of the discoidal cell, the apex very broadly, and the 

 outer margin decreasingly black ; in certain lights the large circular patch of shining 

 fuscous androconia is very prominent. Hindwing with the costa broadly black, the 

 abdominal margin broadly whitish, the outer margin with an anteciliary black thread ; 

 the anal lobe black, powdered over with white scales and bearing inwardly a small 

 ferruginous patch ; tails black, tipped with white. Cilia of both wings black. 

 Underside, both wings dull brownish-fuscous, of almost the same shade as in Camena 

 cleobis, Godart ; an outer discal or sub-marginal prominent narrow dark fuscous line ; 

 a very indistinct marginal fascia. Forewing with a discal line nearly straight, only 

 slightly outwardly curved commencing on the sub-costal nervure beyond the point 

 where the third sub-costal nervure arises, ending on the sub-median nervule. Hindwing 

 has the discal line quite straight from the costa to the third median nervule, afterwards 

 to the abdominal margin it is regularly zigzagged ; a small round black spot in the 

 first median interspace well removed from the outer margin ; inwardly crowned 

 narrowly with orange, outwardly bearing some metallic turquoise-blue scales ; 

 the next interspace bears on the margin a few turquoise-blue scales touching the 

 sub-median nervure ; the anal lobe bears a moderate-sized round black spot, narrowly 

 anteriorly crowned with orange, outwardly with some metallic turquoise-blue scales ; 

 a narrow black anteciliary line. Cilia of both wings of the colour of the ground of the 

 wings. Body above throughout very hairy, pale blue, the abdomen beneath ochreous. 



Female. Upperside, both wings pale dull blue without any metallic lustre 

 whatever.' Forewing with blue coloration of much greater extent than in the male, 

 owing to the absence of " male mark," and occupying the whole of the discoidal cell. 

 Hitidwing with the traces of a sub-marginal black band ; an indistinct round black spot 

 in the first median interspace ; otherwise as in the male. 



The female of this species appears to be nearest to the same sex of Tajuria mantra, 

 Felder, of which there is a single example in the collection of the Indian Museum, 

 Calcutta, from Mergui, taken in March by Dr. J. Anderson. It differs from this 

 specimen, as also from Felder's description and figure, in the small extent of the yellow 

 coloration at the anal angle of the hindwing on the underside. In this respect it agrees 



