
566 RECORDS OF THE S.A. MUSEUM 

2 

025mm 

Fig. 1-6, Cercaria lessoni. 1, glandular, nervous, digestive and reproductive systems, and 
spination; 2. exeretory system; 3. tail; 4. sporocyst; 5. showing different shapes assumed 
according to the state of contraction; 6. two variations in the excretory commissures, Outlines 
of fig. 1-5 drawn with camera lucida; fig. 6 drawn freehand, 
