HYPOLYC^NINM 109 



decreasingly black. Hindwing witli the costa and abdominal margin wliitisli ; a narrow 

 auteciliary black line which widens out at the apex and is continued some distance 

 along the costa, anal lobe entirely black ; tails black, tipped and edged with white. 

 Underside, both wings pale French-grey, a very indistinct sub-marginal darker fascia. 

 Foreicing with a discal, somewhat irregular, slightly outwardly curved, dark French- 

 grey band or line, outwardly defined with white, commencing at the second sub-costal 

 nervule, ending on the sub-median nervure. Hindicing with a similar discal line but 

 much more irregular throughout its length than on the forewing, posteriorly highly 

 zigzagged and recurved to the abdominal margin ; a large round black spot on the 

 margin in the first median interspace, prominently anteriorly crowned with yellow ; 

 the sub-median interspace on the margin white sprinkled with black scales ; the anal 

 lobe bearing a small deep black spot, which bears outwardly some metallic-green 

 scales ; anterior to this spot is a short yellow fascia reaching the abdominal margin, 

 well separated from the yellow patch in the first median interspace ; a fine black 

 anteciliary thread, inwardly defined by an equally fine white thread ; face white in 

 front ; palpi with the first and second joints white, the third black ; eyes surrounded 

 by a white line. An tennae black, the shaft finely annulated with white ; body above 

 blue, beneath whitish ; legs white, prominently ringed with black. 



In general appearance this species very closely resembles Britomartis cleohoides, 

 Elwes, and B. huto, de Niceville, difi"ering structurally, however, in possessing three 

 instead of two sul)-eostal nervules to the forewing. From the female of B. cleohoiden 

 it differs on the upperside of the forewing in having the blue area of greater extent, 

 therel)y reducing the black apical area by about one-half; the anal lobe of the 

 hindwing is entirely black, in B. cleoboides it is crowned with ochreous, and bears some 

 metallic-blue scales. On the underside of both wings the discal line in B. cLobokles is 

 distinctly deep ochreous, almost ferruginous (Elwes calls it " pale yellow," but viewed 

 under a strong magnifying glass it is really dark yellow) instead of dark French-grey, 

 it is also outwardly curved, in B. cleoboides it is very straight in all my twenty 

 specimens (seventeen males and three females), on the hindwing also the discal line is 

 very much more irregular ; the two yellow anal areas do not meet as they do in 

 B. cleoboides ; and the space between them on the margin does not bear metallic-blue 

 scales. From B. buto it difl'ers on the upperside in the difi"erent shade of the ground- 

 colour being a paler blue and not iridescent green in any light ; the blue colour also is 

 far more extensive in the forewing ; and the same differences hold good on the 

 underside as regards the discal band as obtain between it and B. cleoboides, but it 

 agrees with B. buto in the complete separation of the yellow patches on the hindwing. 

 From lolaus ister, Hewitson, of which I possess a female from Maulmein, Burma, 

 and another from Borneo, it difl'ers in the greater extent of the blue coloration of the 

 forewing on the upperside, and in the outline of the hindwing, in T. tyro the outer 



