

Plate 4 

 Cellaria vitrimuralis, new species 

 (All figures except D and F drawn with aid of camera lucida) 



Figure A: Avicularium, with mandible (m) in place. Seen from slight side-angle thati 

 shows protrusion and prominence of rostrum (r) into which mandible fits, and ledges (l) 

 against which the mandible base articulates. Bladelike wall of avicularium evident at^ 

 bottom left and top. Drawn to scale a. 



Figure B: Avicularium seen from front. Note muscles (u) and sclerites (s) or reinforce-t 

 ments of mandible, its distal position and relatively large size. Drawn to scale a. 



Figure C: Orifice (o), showing the two proximal denticles (y) and overhanging distal; 

 wall or "cornice" (k). At each side of orifice are the two parentheses lines (p) and external; 

 to them are the cryptocyst ridges. Drawn to scale a. 



Figure D: Free-hand habit sketch. Colony jointed and branching dichotomous. 



Figure E: View of another a\icularium, showing more extensive reinforcement of man-i 

 dible and two lines representing cryptocyst ridges. Drawn to scale a. 



Figure F: Cross section of a branch, showing pentamerous arrangement of zoids. Cull 

 was made through two series of zoids, i. e., where two series overlap. Free-hand sketch. 



Figure G: Avicularian mandible, from inner side, showing hooked or pointed terminal; 

 end and three sclerites at basal end. Drawn to scale a. 



Figure H: Colony fragment. Full view of fi\'e autozolds and one a\icularium. .Uic^ij 

 iilarium replaces a regular autozooecium in the transverse series. Transparent side walli 

 show through frontal walls and thus account for the number of longitudinal lines in the 

 figure. None of the zooecia here pictured has an o\'icell. A few opercula are in place 

 (i'r). Drawn to scale b. 



Figure I: Colon\- fragment, showing zone of dichotomous branching and single large 

 tubular radicle "fiber" or tube which arises from frontal surface of a zooecium. The zooecia 

 in this fragment do not have ovicells. Drawn to scale c. 



Figure J: Colony fragment from an ovicelled branch. The large globular endotoichal. 

 ovicells (ov) show through the transparent zooecial walls. Ovicell opening (op) is directlyl 

 above zooecial (irificc. Drawn to scale (/. 



