Pig. 20. 



Tongue of a Worker-Bee^ muck magnified. 



mx, mx— Maxillae. 

 c, c— Cardos. 

 St, St— Stipes. 

 I, I— Ijaciniae. 



k, fc— Labia palpi. 

 t— Tongue. 

 /—Funnel. . 



J.— Maxillae and labium. 

 mp.wip— Max. palpi. 

 0— Sub mentum. 

 771— Mentum. 

 p, p— ParagrloBSie. 

 J3— Liffula, witli sack distended, 

 s— Colorless membrane. /—Funnel. JB— Tubular rod. 



C— Cross -section of ligula. 

 S— Slieath. K— Tubular rod. s, s— Colorless membrane. 



