[335] THE BRYOZOA 243 



ABBREVIATIONS USED IN THE FIGURES. 



av. avicular i um . 

 ar. area. 

 art. articulation. 

 ap. aperture. 

 *. beak. 

 bas. basal. 



bifur. bifurcation of branch. 

 d. denticle. 

 emb. embryo. 

 f. a. frontal avicularium. 

 fi. sp. flattened spine. 

 /. lines of calcification, 

 /a/. lateral. 

 m. margin. 

 man. mandible. 

 mus. app. muscular apparatus. 

 ae. oecium. 

 op. operculum. 

 or. orifice. 

 ped. peduncle, 

 r./. radical fiber. 

 sp. spine. 

 toe. z oecium. 



