NO. 2 



HONEY BEE — SNODGRASS 



31 



fibers to attach on the arms of the oral plate; and finally, a slender, 

 fusiform, unpaired median muscle (j/), arising by a long tendon on a 

 median point of the tentorial bridge, stretches along the posterior wall 

 and attaches on the oral plate itself. 



Fig. 10. — The sucking pump. 



A, median vertical section of the head, diagrammatic, showing sucking pump 

 composed of cibarial and pharyngeal sections (Cb, Phy), and salivary syringe 

 (Syr) in base of labium. B, oral plate, its pharyngeal arms and their muscles, 

 and the suboral bib, flattened, anterior view. C, the sucking pump and its 

 muscles, lateral view. 



o, orifice of brood-food gland on distal angle of oral plate; y, pharyngeal arm 

 of oral plate. 



