PLATE XXVII. 



FIG. I. Schizobranchia insignis sp. nov., p. 206. Lateral view of young speci- 

 men in which the branchiae are being repaired from injury, X 2 * 



2. Sabella humilis sp. nov., p. 195. Dorso-lateral view, X about 4. 



3. Parasabella media sp. nov., p. 2OO. Ventral view, X ! 



4. Dorsal view of same specimen. 



5. Portion of two branchiae, X 4- 



6. Terminal portions of branchiae, X^: a, Sabella leptalea sp. nov., p. 



195 ; b, Sabella formosa sp. nov., p. 196; c, Sabella elegans sp. nov., 

 p. 194. 



7. Spirorbis semidcntatus sp. nov., p. 237. Lateral view of tube, show- 



ing operculum, X 5- 



8. Spirorbis spirillum Linne* var. lucidus Montagu, p. 243, from Pacific 



Grove, on shell of Cerithtum, X 5- 



9. Eupomatus gracilis sp. nov., p. 234. Dorsal view of anterior portion 



of specimen from Pacific Grove, X 4- 



IO. Spirorbis semidentatus sp. nov., p. 237. Top view of two tubes, show- 

 ing slightly protruding animal, X 5- 



