484 



Miscellaneous. 



as it applies to the same species which had been named in 1837, by 

 Brandt, Taphrometopon lineolaturn. 

 1 3 



EXPLANATION OF FIGURES. 

 Figs. 1-3. Head, viewed from different sides. Nat. size. — Fig. 4. Anal region. 

 Nat. size. — Fig. 5. Maxillary, palatinal, and pterygoidal bones, with the teeth, 

 from the right side. Twice magnified. 



MISCELLANEOUS. 



On an undescribed Species of British Zoanthus. 

 By E. W. H. HoLDSwoRTH, F.L.S., &c. 



In August 1860 I received from Mr. T. H. Stewart, of the Royal 

 College of Surgeons, a Zoanthus which had been taken by him a few 

 days previously whilst dredging for Echinoderms in Plymouth Sound. 

 After a careful examination of the specimen, I am induced to regard 

 it as specifically distinct from Z. Couchii, to which species, of the 

 three found on our coasts, it is most nearly allied. As the polypes 

 were unfortunately dead, and beginning to decay when they came 

 into my possession, they were at once immersed in spirit ; and their 

 characters were noted whilst in that condition. 



The specimen consists of an unattached group of ten polypes, of 

 ^^ various ages, ranging from a sim- 



^^^^ ^ _^ pie bud to individuals an inch in 



■yj^ ^^fek mS .M^ length. They are all united at 



^^^ ^^^ W[^^^ ^^ ^^ base, which is rounded below, 

 ^^^^^^^fk^S^^ JS and encloses a small sandy nucleus, 

 ^^^^l^^^^^^^^^^r particles of the same material 

 ^P^^^^^^^^ being also aggregated on the sur- 

 ^^ face from which the polypes spring, 



and between their points of union. This radiating mode of deve- 

 lopment is the same as in some of the free varieties of Z. Couchii, 

 and will doubtless bear a similar explanation. The largest polypes 

 are nearly a quarter of an inch in diameter at the head, and taper 

 slightly downwards. This form, however, is most apparent in half- 

 grown examples. The dermal coating consists of fine siliceous sand. 



