174 



F'LASHMCIMTS OX NATI'RK 



to a more characteristic feature, coiiunon to wasps 

 with the whole bee family. 



All these cousins possess by common descent 

 the usual four wiii^s of well-rej^ulated insects. 

 But it so happens that the habits of the race 

 make stron«^ and certain tlij^ht more practically 

 important for them than the mere power of atrial 



NO. 13. -I'AKI OK TWO WINtlS. U I IH H(»()KS AM> (JKOOVES. 



coquetting and pirouetting^ possessed by the far 

 less business-like butterflies. Wnw wasp and your 

 bee are women of business. Thev have therefore 

 found it pay them to develop a mechanism by 

 which the two win^s on either siile can be lirmly 

 locked toj^ether, so as to act like a sinj^le pinion. 

 No. 13 very well illustrates this admirable plan 

 for fastenin}» the fore and hind w'mgs t'^gether. 



