MISCELLANEOUS. 71 



any visible result, these objects have disappeared successively from the 

 specimens bearing them. The group of Corynse, fig. 4, of which figs. 5, 6 

 are clusters enlarged, was delineated along with them on June 24. 

 Scarcely any of the gemmules composing them remained on this group 

 on July 3, when the stalks were sufficiently vigorous. Next day, 20 

 or 25 corpuscula, bearing resemblance in every thing to the corpuscula 

 originating from the Actinia, lay in the bottom of the vessel. They were, 

 for the most part, of a rude ovoidal figure, several nearly spherical, of 

 reddish brown colour, and consistent solid aspect. Some, besides, swam 

 heavily in all directions, their motion being, apparently, effected by means 

 of cilia. — Fig. 8. In four days they became stationary, but nothing more 

 decisive followed. 



I have twice observed a number of corpuscula, as if suspended amidst 

 transparent jelly, at the summit of adult specimens. However, the spawn 

 of various minute animals is frequently seen of such a form. 



This product always resembles a meagre and distorted shrub in minia- 

 ture. It is founded on rocks, on shells, and sometimes appears as a para- 

 site on other zoophytes. Its position is usually above, and its growth ver- 

 tical ; but, on removing portions of shelving rocks, at about half-tide, I 

 have seen numbers growing inverted, with the summit downwards. Under 

 these conditions, the Coryna is less exposed to that adventitious matter, 

 often rendering it very foul in other situations, — so much so as to obscure 

 the parts. 



Plate XXI. Fig. 1. Coryna (Hermia) glandulosa. 



2. The same, enlarged. 



3. Another specimen, bearing gemmules. 



4. Group of Corynse, invested below by foreign matter. 



5. Summit of a branch, bearing gemmules. 



6. Summit recurved, bearing gemmules. 



7. Summit, shewing the arrangement and aspect of a set of 



spherical heads and their pedicles, magnified. 



8. Corpuscula. 



All the preceding figures, except the first and fourth, are 

 enlarged. 



Plate XXII. Group of Coryna (Hermia) glandulosa, enlarged. 



