PLATE XXIV. 



Fig. 1. Edxvardsia siputiculoides. (Esophagus everted. 



2. Another specimen of the same contracted ; physa adhering to pebbles. 



3. Two other specimens, one (^) showing the place from which was taken 

 the piece represented in text figure 5. 



4. Harenactis attenuata. Oral region. 



5. Aboral region of another individual of the same species. 



6. Charisea saxicola, in various degrees of contraction. 



7- 

 8. 

 9- " " Cross section below oesophagus. 



Note. — All of the figures are reproduced natural size from photographs of 

 preserved specimens. 



(40S) 



