PLATE XXVI. 



1. Colurus deflexus 

 1(1. „ „ 



2. Colurus bicuspidatus 



zee. ), )) 



3. Colurus obtusus 



86. „ „ 



3c. „ „ 



4. Cohtrus coelopinus 

 4a. „ „ 

 45. 



5. Cohu'us amblytelus 

 5a.. „ „ 

 C. Coliirus caudatus 

 6a. „ „ 

 66. „ „ 



7. Monura colurus 

 7a. „ „ 



8. Mytilia Tavina 

 8a. ,, „ 

 86. „ „ 

 8c. „ „ 



9. Cochleare staphylinus 

 ya. t) ,} 



10. Cochleare turbo 

 10a. „ „ 



11. Pterodiua patina 

 11a. „ „ 

 116. 

 lie. 



12. Pterodiiiapatina{a variety) 

 12a. „ „ 



13. Pterodina valvata 

 13a. „ „ 



14. Pterodina clypeata . 

 14a. „ „ 



15. Pterodina mucronata 

 15a. „ „ 



16. Pterodina truncata . 



17. Pterodina elliptica . 



dorsal view G 



side view, head retracted ... . G 



dorsal view Gr 



side view G 



side view, head retracted . . . . G 



side view, head protruded . . . . G 



ventral view G 



obliquely ventral view G 



side view G 



extremity of foot, and toe . . . . G 



junction of foot and toe G 



ventral view ....... G 



side view G 



ventral view G 



side view G 



rear view G 



side view, head protruded . . . . G 



side view, head retracted . . . . G 



ventral view ....... G 



side view, head and foot protruded . . . G 



side view, liead and foot retracted . . . G 



trophi G 



dorsal view G 



side view G 



dorsal view G 



side view G 



dorsal view H 



ventral view, head retracted ... . H 



side view ....... H 



fi'ont ^'iew ....... H 



dorsal view H 



ventral view, head and foot retracted . . H 



ventral view H 



dorsal view, lorica folded H 



dorsal view ....... G 



dorsal view, head retracted . . . . G 



dorsal view G 



ventral view, lorica G 



ventral view G 



lorica, ventral view H 



