GENERAL CHARACTERS 



9 



you can straighten out these limbs, and then the difference in 

 length to be observed between them and the other four is very 

 striking indeed. They are also thinner than the middle and hind 

 legs ; and, unlike these, are not provided with claws. 



Z V 



FIG. 8. DIAGRAM or THE WIXGS OF A BUTTERFLY. 



I. Fore wing. 1-5, subcostal nervules ; 6, 7, discoidal nervules ; 8-10, median 

 nervules ; 11, submedian nervure ; 12, internal nervure ; 13-15, disco-cellular 

 nervules; 16, interno-mcdian nervule; 17, median nervure; 18, subcostal 

 nervure ; a, costal nervure ; b, costa or anterior margin ; r, apex or anterior 

 angle ; d, posterior or hind margin ; e, posterior or anal angle ; /, interior or 

 inner margin : </, base ; h, discoidal cell. 



II. Hind wing. 1, 2, subcostal nervules ; 3, discoidal nervule ; 4-6, median 

 nervules ; 7, submedian nervure ; 8, precostal nervure ; 9, subcostal nervure ; 10, 

 median nervure; 11, 12, disco-cellular nervules ; a, costal nervure; 5, costa or 

 anterior margin ; c, apex or anterior angle ; d, hind margin ; e, tail or caudal 

 appendage ; /, anal angle ; g, abdominal or inner margin ; h, base. 



These imperfectly developed legs are, of course, quite useless as 

 far as walking is concerned ; indeed, it is extremely doubtful as to 

 whether they are of any service whatever to the owner. On one 



