110 CATALOGUE OF THE ZOOPHYTES OF 



of the following year, some of these little animals were still found 

 inhabiting the same or neighbouring pools, but circumstances 

 prevented my obtaining any of them for further examination. 

 The number of tentacles varied considerably, according to age. 

 They were capable of great extension and contraction, as was 

 also the body, which varied much in outline at different times. 

 There were four apertures on the disc surrounding the mouth, 

 corresponding to the ovisacs of the Medusae. 



Family. SERTULARIAD^E, Johnston. 



8. HALECIUM, Oken. 



1. H. HALECINUM, Linn. 



Johns. Brit. Zooph., 58, t. viii. 

 Common in the coralline zone and deep water, and frequently 

 of large size. 



2. H. Beanii, Johns. 



Johns. Brit. Zooph., 59, t. ix., f. 1, 2. 

 From the fishing boats, Cullercoats ; rather rare : also from 

 the five-men boats. " With vesicles on Thuiaria thuia, in 

 January, 1848." — /. Coppm, Esq. 

 Tliis species is generally parasitical. Examples have occurred 

 to me upon H. halecinum, where all seemed to form one polypary, 

 until the specimens were more carefully examined and each found 

 to bear its characteristic ovicapsules. H. Beanii is more slender 

 than H. halecinum, and not so regularly and stiffly branched. 



3. H. MURicATUM, Ellis and Solander. 



Johns. Brit. Zooph., 60, t. ix., f. 3, 4. 

 From the fishing boats at Cullercoats and Wliitbum, occa- 

 sionally, J. A. Seaton. — J. Hogg, Esq. "Abundant at 

 Cullercoats in the winter months." — J. Coppin, Esq. A 

 fine much-branched specimen, measuring, when fresh, 

 6 inches high, and nearly as much across, was obtained 

 from the deep-water boats, and is now in the Newcastle 

 Museum. 

 A Halecimn apparently different from any of the above was 



