BRITISH ZOOPHYTES. 101 



of the calycles may be seen from the generic descrip- 

 tion. The polypite is of a greenish colour. 



FAMILY V. TRICHYDRID^. 



Calycles rudimentary , tubular. Polypites cylindrical, 

 very extensile, with a small conical i^rohoscis. — T. H. 



Genus Teic hydra, Wright, {dpi^, hair, and hydra.) 



Stem creeping, branched. Calycles as described 

 above, given ofif at intervals from a creeping stem. — 

 T. H. 



1. T. PUDicA, T. S. W. 



? Eudendrium pudicum (F. B.). 



Hab. : Firth of Forth {T. S. W.). The polypite in 

 this species is about | in. in height, and is able to 

 extend its body and tentacles to a great extent. When 

 extended it looks like a hair, hence its generic name. 



Described in the Edinburgh New Philos. Journal for 

 January, 1858, p. 6. 



FAMILY VI. COPPINIID^. 



Calycles united by an encrusting, cellular mass. — T. H. 



Genus Coppinia, Hassall. 



Zoophyte consisting of a number of long tubular 

 hydrothecae crowded closely together and united by an 

 adherent cellular mass, involving the lower portion, 

 and leaving the upper portion free. — T. H. 



1. C. ARCTA, Dalzell. 



Sertularia arcta (Dal.), Coppinia mirabilis {Has.). 



Hab. : Common. Parasitic on other zoophytes. 

 The polypites ''are not united at the base by a creeping 



