Plate 32 



Smittoidea evelinae (Marcus) 



Figure A: One complete nonovicelled zooecium, parts of four other zooecia, and two 

 ovicells, all well calcified. Drawn from calcined specimen from Station 230 to scale at 

 upper left. 



Figure B: The largest, hollow, trumpet-shaped colony from Station 234. On its inner 

 surface are calcareous worm tubes and bryozoan colonies (as Ramphonolus inermis, etc.). 

 Drawn to scale at left. 



Figure C: Mandible from colony In figure B. Chitinous reinforcements in white, thinner 

 parts stippled. Both the lower hemispherical mandible and upper membranous covering 

 of the avicularial-back-membranous area are shown for size comparison. Drawn to scale 

 at left. 



Figure D: Primary and secondary orifices tipped forward to show relation of horizontal 

 avicularium to lyrula and peristome. Gentle curvature of distal border not seen because of 

 tipping. Drawn from material from Station 230 to the scale at right. 



Figure E: Four zooecia and two incomplete ovicells of which only the inner lining shows. 

 One to two rows of frontal alveolar pores are indicated. Drawn from the colony shown in 

 figure A to the scale at upper left. 



Figure F: Operculum, its marginal reinforcements and occlusor muscles. Drawn from 

 colony shown in figure B to the same scale as figure D. 



Figure G: Primary orifice, two cardelles, lyrula, and oral avicularium within bounds of 

 the peristome. From colony shown in figure B. Same scale as figure D. 



Figure H: Less heavily calcified ovicell than in figure A. Same scale as figure A. 



Figure I: Another colony from Station 234. Its wide but thin, flattened stem is solid, 

 the zooecia growing back to back, in bilaminate fashion. The unilaminate sides flare out 

 into shape of a cup. Inside the cup grow Ramphonotus inermis and calcareous worm tubes. 

 Same scale as figure B. 



Figure J: Zooecium tipped forward to show lyrula, oral avicularium, operculum covering 

 the orifice, and an extended platform on which the oral avicularium rests. This zooecium i 

 is tipped so far forward that the operculum (heavily stippled) is very foreshortened. Drawn 

 from fragment from Station 234 to same scale as figure D. 



IMI 



