DESCRIPTION OF SPECIES 69 



of the abdomen. The stomach (st.) is ovoid or in some zooids nearly globular. There are four folds on 

 the walls, best seen in a transverse section (Text-fig. 18 B). The intestine is short and the rectum (r) 

 long and narrow. The anus (a) lies far back in the thorax, opposite the last or second last row of 

 stigmata; it has two deep rounded lobes. 



Gonads. Some of the zooids have a well-developed testis (t.) consisting of a large group of many 

 small pear-shaped follicles, lying on the right side of the zooid near the lower part of the intestinal 



0.5 mm 



Text-fig. 18. Clavelina claviformis (Herdman) (St. 929): A, zooid; B, transverse section of stomach. 



