Tech. Series 22, Bureau of Entomology, U. S. Dept. of Agriculture. 



Plate VII 



Structure of Dipterous Larv/e. 



PiR. 121 



r 



ig. 121 — A'wx«7a notata: Ccphalopharyngeil skeleton. Fig. V2-2.—Pinpliila caxfi: Tip of bodv, below.. 

 Fig. IZi.—PiophUft caxfi: Tip of boci v, above. Fig. 124.— Piophila cnsri: Anterior .spiraile. Fig. 125.— 

 Rhagolclmpnmonrlla: Cephulopharyngeal skeleton. Fig. 12ti.— Calliphora erythroriphala: Cephalophiirvn- 

 geal skeleton. Fig. 127. /ioma/o;n via sp.: Cephalopharyngeal skeleton. Fig. l-Js.—ProlocaUiphura,- 

 Cophalopliaryneeal skeleton. Enlarged. (Original.) 



