48 



SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 10/ 



rao, retractor muscle of mouth angle, 

 frontal muscle of hypopharynx 

 {hphmcl). 



RNv, recurrent nerve. 



sc, salivary canal, outlet tube of sali- 

 vary pump. 

 Sit, sitophore, floor of cibarial pump. 

 SlDct, duct of salivary glands. 



SIP, salivary pump. 



SoeGng, suboesophageal ganglion. 



Sp, spiracle. 



Spn, spinneret. 



Stom, stomodaeum. 



T, tritocerebrum. 

 TR, temporal ridge. 

 ts, temporal sulcus. 



