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LIST OF ABREVIATIONS. 



a. p., anal papillae. 



b. c., blood corpuscles. 



b. m., basement membrane, 

 br., brain. 



c, concretion bearing cells. 

 c. gl., caecal gland. 



c. m., circular muscles, 

 col., colon. 



com., commissure, 

 con., concretion, 

 d., salivary duct. 



d. c, degenerating cells. 



d. sec. digestive secretion. 



ep., epithelium. 



eph., epipharynx. 



es., esophagus. 



es. v., esophageal valve. 



f., food. 



gl., gland which secretes the peritro- 



phic membrane, 

 hy.. hypopharynx. 

 il., ileum, 

 jl. v., ileal valve, 

 in., intima. 

 1., lumen, 

 la., labium. 

 1. m., longitudinal muscles. 



Ir., labrum. 

 m., mouth, 

 m. c, mucus cell, 

 'md.. mandible. 

 n\. int.. mid-intestine, 

 m. t., Malpighian tubule, 

 mx., maxilla, 

 mx. p.. maxillary palpus, 

 n., nucleus, 

 nl., nucleolus, 

 n. m., nuclear membrane, 

 p., caecal gland pouch, 

 ph., pharynx, 

 ph. b., pharyngeal bars, 

 ph. m., pharyngeal muscles, 

 pr., press of salivary duct. 

 r. c, regenerating cells, 

 rec, rectum, 

 s., blood space, 

 sec. c, secretory cells, 

 sec. p., secretory proliferations, 

 s. g., salivary gland, 

 sp., sphincter. 

 St. b., striate border, 

 vac, vacuole, 

 v., valve between ileum and colon. 



