PLATE XXIII. 



1. Euchlanis lyra . . . dorsal view H 



la. ventral view H 



16. ,, foot, and contained vessels . . . H 



2. Euchlanis pyriforniis . . ventral view H 



2a. transverse section ...... H 



26. front-edges of lorica . . . . . H 



3. Euchlanis uniseta (?) . . side view H 



4. Euchlanis triquetra . . dorsal view H 



4. side view ....... H 



46. ventral view of lorica H 



4c. transverse section . . . . . H 



5. Euchlanis dilatata . . ventral view : a, edge of dorsal plate ; 6, edge 



of the flange of ventral plate ; c, edge of 

 the portion connecting the dorsal and 



ventral plates, and at right-angles to both . H 



5a. dorsal front-edge of lorica . . . . H 



56. ,, . . ventral front-edge of lorica . . . H 



6. Euchlanis macrura . . dorsal view . H 



