AROMATIC BUTTERFLIES 167 



tip of the abdomen, which emits " a rather strong 

 odor/' but whether agreeable or not he does not 

 state. In addition to these, there are not a few 

 instances known in which the statement regarding 

 the source of the odor is somewhat vague, a gland 

 being referred to when the only specification of 

 such an organ is a collection of scales of peculiar 

 character. On this account, and because in cer- 

 tain instances the odor of such collections of scales 

 is plainly due to the scales themselves and not to 

 the pouch in which or the surface upon which 

 they may occur, I prefer to class all these in- 

 stances in the third group. 



This includes odors emitted by scales or clus- 

 ters of scales. In all instances, so far as known, 

 these are confined to the male sex, the scales 

 themselves or the patches being similarly re- 

 stricted. Thus we find a species of Antirrhea, 

 one of the Satyrinae, in which, according to Fritz 

 Miiller, the males emit a strong odor from a col- 

 lection of scales on the hind wings at the anterior 

 base of the upper surface, covered by the fore 

 wings and specially protected by a curving mane 

 of pale buff hairs. In a genus of Morphinae, 

 Stichophthalma, Wood-Mason perceived a pleas- 

 ant odor emitted by a patch of modified scales 



