136 



BEES AND BEE-KEEPING. 



would have been impracticable. This difficulty, how- 

 ever, is exquisitely met by the necessary wing-surface 

 being made up by two pairs, an anterior and a posterior, 

 which lie one over the other in repose, so that they 

 occupy but little space, their two points in position 



Fig. 27.— Wings of the Bee, Nervures, Cells, and Details. 



fL?; | nten01 a " d Posterior Right Wings of Worker (under side), Magnified 

 Eight times-1 Costal Cell ; 2, Externo-median Cell ; 3, Interno-median Cell • 

 4, Anal Cell; 5, Marginal Cell ; 6, 7, b and 9, 1st, 2nd, and 3rd and 4th Sub 

 marginal Cells; 10 11 and 12, 1st, 2nd, and' 3rd' Discoidal Cells " 13 and "4 

 1st and 2nd Apical Cells ; e, d, Plait ; e, f, Hooklets. C, Plait and Hook lets 

 Magnified Twevity-five times-c', d', Plait; t',j>, Hooklets. D, Cross Section 

 through line a, 6, oip, Plait, and /,, Hooklet, locked together. section 



only covering a width of fully £in. Other hymeno- 

 pterous insects have, in this respect, a like structure, 

 and for identical reasons : the ant travelling through 

 narrow galleries, the wild bee in its burrow, and the 

 wasp in its cell, being able to so place their wino S 



