[335] THE BRYOZOA 243 



ABBREVIATIONS USED IN THE FIGURES. 



av. — avicularium. 

 ar. — area. 

 art. — articulation. 

 af. — aperture. 

 b. — beak. 

 has, — basal. 



bifur. — bifurcation of branch. 

 d. — denticle. 

 emb. — embryo. 

 f. a. — frontal avicularium. 

 fl. sp. — flattened spine. 

 /. — lines of calcification. 

 lat. — lateral. 

 m. — margin. 

 man. — mandible. 

 mus. app. — muscular apparatus. 

 <B. — oecium. 

 op. — operculum. 

 or. — orifice. 

 ped. — peduncle. 

 r.f. — radical fiber. 

 sp. — spine. 

 zx. — zcecium. 



