(1G2) 

 EXPLANATION OF THE PLATES. 



Plate III. 

 Figs. 1, 2. Vorticlava Jmmilis, natural size and magnified. 



3. A tentacle of the lower row, much enlarged. 



4. Ditto of the upper row ditto. 



5, 6. Eudendrmm confertum, natural size and magnified. 



7. A polypary of the same, magnified. 



8. A tentacle, contracted and very highly magnified. 

 9, 10. Eudendrium capillare^ natural size and magnified. 



11. A polype of the same, more highly magnified. 



12. Reproductive capsule (sperm-capsule?), more highly magnified. 



Plate IV. 

 Figs. 1, 2. Sertularia tricuspidata^ natural size and magnified. 

 3, 4. Sertularia tenella^ natmal size and magnified. 



5. Ovicapsule of the same. 



6. A polype-cell, showing the operculum. 



7. Campamdaria volubilis, highly magnified. 



8. Campanularia Johnstoni^ ditto. 



9. Cavipanularia Eincksii^ ditto. 



Plate V. 

 Figs. 1, 2. Laomedea neghcfa., natural size and magnified. 



3. A cell of Laomedea gekitinosa, Pallas. 



4. Two cells of Laomedea longissima^ Pallas. 



5. Laomedea acuminata^ natural size. 



6, 7. The same, highly magnified, with the polype in diff*erent states of 



expansion. 

 8. The same with the polype withdrawn. 

 " Plate VI. 

 Fig. ... 1. Gramm,aria ramosa^ natural size. 



2. Another specimen, magnified. 



3. A portion of the same, more highly magnified. 



4. A section of the stem of the same. 



5. Camjianidaria gracillima^ natural size. 



6. A portion of the same, magnified. 



Plate VII. 

 Fig. ... 1. B?/sZ;«a W27ews, highly magnified. 



2. Two cells of the same, the upper one showing the sheath of setse. 

 3, 4. Alcyonidium mammiUoMm^ natural size and magnified. 

 5, 6. Alcyonidium albidum, natural size and magnified. 



Plate VIII. 

 Fig. ... 1. Farrella pedicellata^ highly magnified. 



2. A cell, iBore highly magnified. 



3. The same, with the tentacles expanded. 



Plate IX. 

 Figs. 1, 2. Coryne (pelagica)^ natural size and magnified. 



3. A group of Tubularia itJijilexa, natural size. 



4. A single polypary of the same, slightly magnified. 



5. The same, highly magnified. 



6. A portion of the same, showing the two coats of the tube. 



7, 8. Coi'ymorpha nana^ natural size and magnified. 



Plate X. 

 Fig. ... 1. Membranipora lineata., a few cells highly magnified, la, a spine. 



2. spinifera, ditto 2a, two spines, 



one bearing an avicularium. 



3. craticula, a few cells highly magnified, lo, a spine 



from the lower part of the cell. 



4. Flemingii, highly magnified. 



6. unicornis, ditto. 



