PLATE IX. 



1. CEcistes serpentinus . 

 la. 



16. 



2. CEcistes brachiatus . 

 Zct, ,, ,, 



26. 



2c. 



3. CEcistes Stygis . 



4. Philodina roseola 

 4fl&. ,, ,, 

 46. 



5. Philodina aculeata . 

 5a. 



56. 



5c. . 



od. ,, . 



6. Philodina citrina 



7. Philodina megalotrocha 



76. 



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 



