434 Explanation of the Plates. 



Fig 5. — Portion of a similar Section. 



Pig 6. — Transverse Section of one of the processes. 



Fig 7.— Oblique Section of one of the processes. 



PLATES VII. VIII. IX. X. XI. & XII. 



Illustrate Dr. Johnston's Catalogue of Zoophytes. Article X. page 240. 

 PLATE. VII. — Fig. 1.— A back view of Pennatula phosphorea as it appears when just taken from the sea. 



Fig. 2.— The same view when all the Polypes are protruded from their cells, and the stalk 



fully dilated. 

 Fig. 3. — A front view. 



Fig. 4.— The bone removed, of the natural size. 



Fig. 5. — A side view of one of the pinnfe magnified to shew the cells and their polypes. 

 Fig. 6. — A small portion of the skin compressed between two plates of glass and magnified to 

 shew the form and arrangement of the coloured cylinders. 



PLATE VII. — Fig. X- — Lobularia digitata of the natural size. 



Fig. *. — A small portion of the surface highly magnified to shew the form and structure of the 

 polypes. 



Fig. t. — A polype detached and slightly compressed between two plates of glass. The scores at 

 the base of the tentacula are intended to exhibit the form and arrangement of some 

 crystalline spicule there, which appear to have escaped the observation of most natu- 

 ralists, but are particularly noticed by Dr. Fleming. 



Fig. ||. — A longitudinal section magnified about two diameters. 



Fig. "ff. — A transverse section shewing the ova in the canals. 



Fig. §. — An ovum highly magnified. 



Fig. J. — The crystalline bodies removed and highly magnified. 



PLATE IX. — Fig. 1. — Alcyonium hirsutum. 1* a small portion of the surface highly magnified to show the 

 cells. 



Fig. 2. — Alcyonium echinatum. 2* a small portion highly magnified. 



Fig. 3. — Halichondria papillaris. 3* one of the specute highly magnified. 



Fig. 4. — Flustra carbasea. 4* a small piece magnified. 



Fig. 5. — A small portion of Flustra pilosa from a shell, highly magnified. 



Fig. 6. — Flustra spiuifera, magnified. 



Fig. 7- — Flustra hispida on a piece of sea- weed, magnified. 



Fig. 8. — Tubulipora patina, magnified. 



PLATE X. Tubularia ramosa of the natural size. * a small piece magnified, with three views of the animal. 



PLATE XI. Fig. 1.— Campanularia dumosa, natural size. 1* a piece magnified. 



Fig. 2. — Sertularia operculata, natural size. 2* magnified. 

 Fig. 3. — Sertularia rugosa, magnified about four diameters. 

 Fig. 4. — Sertularia argentea, natural size. 4* magnified. 

 Fig. 5. — Cellaria eburnea, natural size. 5* magnified. 

 Fig. 6. — Cellaria scruposa, natural size. 6* magnified. 



PLATE XII Fig. 1. — Flustra truneata. 1* a portion magnified. 



Fig. 2 Sertularia halecina, natural size. 2* magnified. 



Fig. 3. — Cellepora ramulosa, natural size and magnified. 



Fig. 4. — A large specimen of the same of the natural size. 



Fig. 5. — Berenicea coccinea, natural size. 5* a few of the cells magnified. 



Fig. 6. — Berenicea utriculata, magnified 



