130 Mr. C. S. Harris on the Marine Vivarium. 



I have procured the B. mirabilis in a living state, parasitic on 

 Cellularia avicularia — one of Mr. Beanos original habitats for it 

 — in tide-pools on the Devonshire coast. 



Laomedea lacerata (mihi). 



This species (the perfect state of Dr. Johnston's Campanularia 

 lacerata) J which I first described in the 'Annals' for August 1852, 

 has occurred to me again on the coast of Devon. It has a spe- 

 cial liking for Bowerbankia imbricata, about the dense tufts of 

 which I have found it in considerable plenty at Exmouth, and I 

 have also dredged it in Slapton Bay, on Campanularia verticillata. 



Campanularia Integra, — the Vesicle. 



We have no description or figure, I believe, of the Vesicle of 

 this species, though it may perhaps be known to collectors. 1 

 have only once met with it, — on specimens of the zoophyte found 

 at Filey on the Yorkshire coast, which spread profusely over one 

 of the red sea-weeds, — a favourite habitat with the various kinds 

 of Campanularia. The vesicle of C. integra resembles in general 

 character that of its ally the C. voluhilis, but has its own distinc- 

 tive peculiarities. It is more truly pedicellate, elongate, spirally 

 twisted ; the wrinkles are not so numerous nor so closely set, and 

 are sharply carinated. The vesicle is abruptly attenuated below, 

 and wants altogether the regular ovate form which belongs to 

 that of the volubilis. 



I am glad to be able to add a drawing of the C. integra and 

 its vesicle, from the accurate pencil of Mr. Tuffen West. 

 Plate III. 



EXPLANATION OF PLATES II. and III. 

 Plate II. 

 Sertularia alata, natural size, and portions magnified. 



Plate III. 



Halia preetenuis, a few cells magnified. 

 Campanularia integra, with its vesicles, magnified. 



XIV. — On the Marine Vivarium. By C. S. Harris, Esq. 

 To the Editors of the Annals of Natural History. 

 Gentlemen, 



The accompanying letter was sent to me a short time since by 

 my friend C. S. Harris, Esq., of Budleigh Salterton, Devon, 

 whose experience has been equal to that of either Mr. Warington 



