PLATE XXVI. 



1. Colurus deflexus 



la. . 



2. Colurus bicuspidatus 

 2a. 



3. Colurus obtusus 



3d. II II 



36. . 



3c. ,, . 



4. Colurus coelopinus 

 4#. 



46. 



5. Colurus amblytelus . 



OCtt I, )) ' 



6. Colurus caudatus 



6&. . 



66. . 



7. Monura colurus 



la. . . 



8. Mytilia Tavina 



8<z. ,, ,, . 



86. 



8c. . . 



9. Cochleare staphylinus 

 9a. 



10. Cochleare turbo 



10a. . . 



11. Pterodina patina 

 lla. . 

 116. . . 

 He. . 



12. Pterodina patina (a variety) 

 12a. . . 



13. Pterodina valvata 

 13a. 



14. Pterodina clypeata . 

 Ua. 



15. Pterodina inucronata 

 I5a. 



16. Pterodina truncata . 



17. Pterodina elliptica . 



dorsal view ..... 



side view, head retracted 



dorsal view ..... 



side view ..... 



side view, head retracted 



side view, head protruded 



ventral view 



obliquely ventral view 



side view 



extremity of foot, and toe 



junction of foot and toe . 



ventral view 



side view ..... 



ventral view 



side view 



rear view ..... 



side view, head protruded 



side view, head retracted 



ventral view ..... 



side view, head and foot protruded . 



side view, head and foot retracted . 



trophi 



dorsal view ..... 



side view ..... 



dorsal view 



side view ..... 



dorsal view 



ventral view, head retracted . 



side view 



front view ..... 



dorsal view 



ventral view, head and foot retracted 



ventral view ..... 



dorsal view, lorica folded . 



dorsal view ..... 



dorsal view, head retracted 



dorsal view ..... 



ventral view, lorica .... 



ventral view ..... 



lorica, ventral view .... 



