of South Devon and South Cornwall. 291 



9. L. lacerata, Johnston. 



Not uncommon : Exmouth, in tufts of Bowerbankia imbricata 

 (the erect form), and on weed; dredged in Slapton Bay on Cam- 

 panularia verticillata, &c. 



This zoophyte is most commonly found creeping like a Cam- 

 panula?^, and seems only under favourable circumstances to 

 assume the arborescent form of the Laomedece. It was only 

 known to Dr. Johnston in its humbler condition. I have met 

 with it most abundantly in this state ; but the cases in which it 

 has occurred of larger and more luxuriant growth have been 

 rare. The Exmouth specimens were of this kind, and were 

 laden with gonothecse, surmounted by the marsupial sacs, in 

 which the ova complete their development. 



The inner surface of a. shell in my possession, which was 

 dredged, I believe, in Torbay, is invested with this species in 

 its Campanularian state ; and in this specimen the reproductive 

 capsules are produced on the creeping stem amongst the polype- 

 cells. We have here, then, the case of a single species exhibiting, 

 in different states of growth, the appearance and the essential 

 characters of the two genera Campanularia and Laomedea. 



[Filey ; Ramsay, Isle of Man ; St. Ives, Cornwall.] 



2. Campanularia, Lamarck. 

 1. C. volubilis, Linn. 



On zoophytes from deep water, occasionally. 



This species is far from common. I have only met with it, in 

 small quantity, on Sertularia abietina which had been taken up 

 by the trawlers. As a deep- water form, it is more likely to 

 escape notice than some other species ; but there can be little 

 doubt that it is comparatively rare. 



[Filey, on Halecium halecinum.'] 



2. C. Johnstoni, Alder. 



Extremely common, from between tide-marks to deep water. 

 Like other Campanularia, it shows a predilection for the red 

 weeds. The ribbon-like leaves of Zostera marina are sometimes 

 profusely covered with it. Indeed it is generally distributed, 

 and adorns with its crystal cups and ringed pedicels the most 

 various marine substances. 



The branched form, figured by Ellis and Solander (tab. 4. 

 figs. E, f), has occurred on Sertularia argentea from Torbay. I 

 have not seen more than a single branch in any case — an exact 

 copy of the original stock, but generally bearing a small and 

 imperfectly formed capsule. Sometimes, however, as I learn 

 from Dr. Strethili Wright {in lit.), two or three branches spring 



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