ABBREVIATIONS. 



atr. 

 cit. 



cl, rhb. 

 cL sp'z. 



com. p. 



com. t. 

 con't- tis. 

 (It. sal. 

 e'th. 

 e'th. ex. 

 e'th. I. 

 e'th. phy. 

 go'po. 

 h'drm. 

 h'drm.' 



in. 



mb. ha. 

 ms'chy. 

 mu. ere. 

 mu. era. ex. 

 mu. arc, i. 

 mu. I. 

 viu. I. ex. 



mu. I. i. 



Genital atrium. 



Cilia. 



Parent cells of the rhabditi. 



Parent cells of the sperma- 

 tozoa. 



Anterior commissure of the 

 brain. 



Posterior commissure of the 

 brain. 



Transverse commissure. 



Connective tissue. 



Salivary duct. 



Epithelium. 



External epithelium. 



Internal epithelium. 



Epithelium of pharynx. 



Gonopore. 



Hypodermis. 



Aborted cells of hypoder- 

 mis. 



Intestine. 



Basement membrane. 



Mesenchyma. 



Circular muscles. 



External circular muscles. 



Internal circular muscles. 



Longitudinal muscles. 



External longitudinal mus- 

 cles. 



Internal longitudinal mus- 

 cles. 



