PLATE XXI. 



Dinocharis pocilluru . 



1. 



la. 



16. 



le. 



Id. 



le. 



2. 



2a. 



26. 



2d, 

 3. 



36. 



3c. 



4. 



4a. 



46. 



4c. 



5. Scaridiurn longicauduni 



Dinocharis tetractis . 



Dinocharis Collinsii 



Scaridiuin eudactylotuiu 



56. 



6. 



6a. 



7. 



7a. 



8. 



8a. 



9. 



9a. 



Stephanops muticus . 



)) >! 



Stephanops laniellaris 

 Stephanops iinisetatus 

 Stephanops chlaena 



dorsal view ....... H 



side view ....... H 



ventral view ....... H 



transverse section H 



variety ; foot ....... H 



trophi ........ G 



dorsal view G 



side view ....... G 



transverse section G 



head ; cap closed . . . . . G 



head ; cap open ...... G 



dorsal view, the armature omitted . . G 



dorsal view, showing spines G 



side view ....... G 



transverse section ...... G 



dorsal view ....... H 



side view ....... H 



ventral view H 



junction of foot and toes . . . . H 



niastax and brain H 



mastax, trophi, and eye G 



dorsal view ....... G 



side view ....... G 



head, showing mastax, trophi. and eye . . G 



dorsal view ....... G 



side view ....... G 



dorsal view ....... G 



side view ....... G 



dorsal view G 



side view ....... G 



dorsal view ....... G 



side view . . G 



