296 ARTHUR D. WHEDON. 



lal lateral lobe. 



m mentum. 



ml median lobe. 



mh movable hook of lateral lobe. 



mx base of maxilla. 



sd -opening of salivary duct. 



ski skeleton of larval labium, severed at hinge between the mentum and sub- 



mentum. 



sm submentum. 

 sq squame of mentum. 

 In central plate of tentorium. 

 tnp posterior branch of tentorium. 

 tr trachea. 



