EXPLANATION OF PLATE 44. 



Wing patches and folds found in male butterflies. 



After pencil drawings by J. H. Emerton. Reproduced photographically by the gelatine process by the Boston 

 Photogravure Co. 



1. Thecla calanus ^f^. Stigma at upper outer 

 termination of cell, to show the comparative size 

 and arrangement of scales in and about the stigma. 

 The lower margin is toward the apex of the wing. 



2. Anosia plexippus ^. Part of the lowest me- 

 dian uervule of left hind wing with its accompany- 

 ing fold or pouch, concealing the androconia. 



3. Anosia plexippus ^. Cross section of the 

 same through the middle of the pouch. Taken 

 from a dry specimen. 



4. Speyeria idalia ^^. Fragment of one of the 

 median veins of fore wing, showing the feathered 



androconia mingled with the scales covering the 

 vein. In fresh specimens, the broad scales on the 

 sides of the vein nearly meet over the top and still 

 further conceal the androconia. The lower edge 

 of the figure looks toward the outer margin of the 

 wing. 



5. Callidryas eubule ^. Showing the patch of 

 erased scales near the base of the second inferior 

 subcostal interspace. 



6. C'alUdryas euhuh "^-p. Part of the base of the 

 same interspace, still further enlarged, to show the 

 differing form of the raised scales. 



