PLATE IX. 



1. CEcistes serpentinus 



la. „ 11 



16. 



2. 



2a. 



26. 



2c. 



2o\ 



3. 



4. 



4a. 



46. 



4c. 



4d. 



5. 



5a. 



56. 



5c. 



5a\ 



6. 



7. 



7a. 



76. 



CEcistes brachiatus 



CEcistes Stygis . 

 Philodina roseola 



Philodina aculeata 



Philodina citrina 

 Philodina megalotrocha 



side view ....... G 



side view, contracted (on a smaller scale) . G 



head ; showing the hooks ... • G 



dorsal view G 



upper portion, expanded ; side view . . G 



upper portion, contracted . . . . G 



extremity of an antenna . . • . G 



extremity of foot, showing peduncle . . G 



dorsal view ....... G 



dorsal view ; corona expanded . . . G 



dorsal view ; corona contracted . . . G 



side view G 



dorsal view ; contracted into a ball . . G 



transverse muscles shown under pressure . G 



side view ; corona expanded . . . . G 



side view ; corona contracted . . . G 



dorsal view ; hiding the foot ... . G 



column partly retracted ; and antenna . . G 



dorsal view in outline ; showing the spines . G 



dorsal view G 



dorsal view G 



side view G 



dorsal view ; contracted G 



