EXPLANATION OF THE LETTEKING OF THE PLATES. 



c 



I 



sp 

 ch 

 cc 

 h 

 Tip 



f 

 t 



cw 



pw 



sw 



tr 



v 







IP 



t 



ep 

 mx 



Corona .... 



Lobe of do. . 



Styligerous prominence . 



Chin .... 



Ciliated cup . 



Hook .... 



Horny processes 



Foot .... 



Toe .... 



Ciliary wreath 



Principal wreath 



Secondary wreath . 



Taster .... 



Vestibule 



Bticcal funnel . 



Lips .... 



Tube from lips to crop 



Crop .... 



Mastax 



Parts of head and body. 



Trophi ms 



malleus \ 



manubrium \Nutritive system, 

 uncus 



incus 



fm 



ramus 

 fulcrum 



! Secreting system, 

 h Vascular system. 



Eeproductive system. 



[ Muscular system. 



-Nervous system. 



