Bui. 431, U. S. Dept. of Agriculture. 



Plate II. 



m- 



n 



o p 



r 



no 



<? 



II 



V 



W X 



I I 



¥ 



ww xx yy zz 



Comparison of a Healthy Larva and the Remains of Larv/E Dead of 



Sacbrood. 



a, A cap of a healthy larva; b,c, d, e, and/, caps over larvse in first, second, third, fourth, and 

 fifth stages of decay, respectively; g, a healthy larva, end view; h, i, j, k, and I, an end view 

 of the five stages of decay; m, a healthy larva viewed from above; n, o, p, q, and r, cor- 

 responding view of the five stages of decay; s and y, healthy larva removed from the 

 cell; t, u, v, w, and z, larval remains in different stages of decay removed from the cell; 

 ww, a larva recently dead of sacbrood with the anterior third removed by the bees; x, a 

 scale removed from the cell; axe, larval remains from which a small portion has been 

 removed by bees: yy, almost a pupa; zz, a pupa dead of sacbrood which had only recently 

 transformed. (Original.) 



