66 DISCOVERY REPORTS 



across the thorax from the margin of the oral opening, seven on each side. Anatomically these are 

 longitudinal muscles, although in fully developed zooids they lie transversely to the longitudinal axis 

 of the zooid. Their origin as longitudinal muscles is, however, shown by their position in young 

 developing zooids (Text-fig. 16C, l.m.). A few narrow and irregular transverse strands are present 

 on the thorax. Only the young developing stages of the zooid have transverse muscles in the abdomen 

 (t.m.) and they are confined to the upper part of it. 



Branchial sac. The large oral tentacles number twenty-six to twenty-eight and are arranged in a 

 single circle. The dorsal tubercle (Text-fig. 16D) is small, with a simple transverse oval slit. 



B 



1.0 mm 



4.0 cm 



Text-fig. 16. Podoclavella kottae sp.n. (St. 934): A, colony; B, thorax of zooid; C, abdomen with 



regenerating thorax; D, dorsal tubercle. 



