cellauiidtE. 103 



Ophiodes mirabilis, milii). Wonderful specimens were 

 obtained, consisting of multitudes of the feathery tufts 

 clustering thickly about the bunches of weed. It is 

 also common off the neighbouring coasts of the Isle of 

 Wight. On the Devon coast it must, I should think, 

 be extremely rare, as after a prolonged and careful 

 examination of this region, extending over many years, 

 I have never met with a specimen. 



Family VI. — Cellariidae. 



EscHARiD^ (part.), Johnston. 

 Salicornariad.e, Busk. 

 ? V1NCULARIAD.E, id. 

 Cellarie.e, Smitt. 

 Salicornakidea (part.), Reuss. 



ZocECiA usually rhomboidal or hexangular, disposed in 

 series round an imaginary axis, so as to form cylin- 

 drical shoots. ZoARiuM erect, calcareous, dichoto- 

 mously branched. 



I HAVE not included the jointed condition of the zoarium 

 in the above diagnosis, as it must be accounted more 

 than doubtful whether this character is of sufficient im- 

 portance to warrant the relegation of such closely allied 

 forms as Cellaria and Vincularia, Defrance, to different 

 family groups. All the British members of the family, 

 however, possess an articulated zoarium. 



The CellariidcB are connected through the genus Nellia, 

 Busk, with the Cellulariidai, whilst in the character of 

 their avicularia and the immersed condition of the ovi- 

 cells they agree with the Flustridce. 



