Plate 33 

 Smittoidea ornatipecloralis, new species 



Figure A: Ovicelled zoid tipped slightly forward to better depict the lyrula, cardelles, 

 and primary orifice. Suboral avicularium is always close to peristomial notch, which is 

 always between it and the lyrula. Drawn to scale at right. 



Figure B: Nonovicelled zoid. Peristomial notch shows but the lyrula and cardelles ar^ 

 hidden behind it because zoid is not tipped forward. Drawn to scale at left. 



Figure C: Primary orifice (blacked in) with median lyrula and the two cardelles. Draw0 

 to scale at right. 



Figure D: Four zoids, two ovicelled, two not, with raised mural rims and large suboral 

 avicularia. Drawn to scale at left. 



Figure E: A suboral avicularium. The pivotal bar separates the very small nearlji 

 hemispherical membrane-covered area from the very large, broad, oval mandibular (beak) 

 part. An extensive mandibular shelf forms a floor under most of beak. Floor buckles up^; 

 ward in central region then dips down like a trough peripherally; in other words, convex' 

 This condition not shown here but is in figures A, B, and D. Drawn to scale above. 



Figure F: Tangential view of three zoids with varying degrees of frontal wall protrusioc 

 in suboral avicularium region. Ordinarily, the mound bearing the avicularium is very small; 

 Drawn to the 1 mm. scale at right. 



Note: Figures A-E drawn from holotype from Station 45; figure F from calcined para^ 

 type from Station 44. 



