INDEX TO PLATES. 



Fig. 4. Crystals of sugar and honey : a, honey crystal ; 

 h, sugar crystal ; c, sugar crystal, found par- 

 tially dissolved in honey. (These are taken 

 from Lankester's ' Half Hours with the Mi- 

 croscope. ') 



Figs. 5 & 6. Portion of brood-comb, showing ordinary 

 hexagonal cells, and 5 c, queen-cells. 



Fig. 7. Larva of Bee (worker). 



Fig. 8. Pupa of ditto (ditto). 



ERRATA. 



Page 3, line 2, after finding insert it. 



,, 9, „ 15, for figB. 1, e, & 3 read figs. 1, c', & 3. 

 ,, 30, „ 6 from bottom, for antennae react antenna. 

 „ 31, „ 11, for PI. IV. read, PI. V. 

 „ 47, last line but one, for fig. 20 read fig. 2, 0. 



