ZOOPHYTES FROM THE CORNISH COAST. 379 



List of specimens ond sketches forwarded toilh this paper. 



Serttilaria gracilis enclosed in glass from Norfolk. 



Sertularia pumila to compare with, the above. 



Scrupocellaria scruposa in glass from Firth of Forth with a 

 piece of the sponge. 



Cauda reptans, specimen of, attached to Fhistra foliacea, from 

 the Firth of Forth. 



REFERENCE TO PLATE 



No. 1. Flumulwria siliquosa, natural size. 



\a. A portion of ditto to show, at b, two capsules on one 

 calycle, magnified. 



2. Scrupocellaria scruposa with " radical tubes ciu-iously 

 serrated," and with spicula of Isodictya panicea entan- 

 gled in the hooks. 



3. Cauda reptaus with ditto. 



4. Radical tubes of both species, with root-like ends, for 

 grasping Flustras, stones, or any other hard object they 

 come in contact with. All of these latter ones much 

 magnified. 



