BRYOZOA. 



107 



CHAPTER VIII. 

 BRYOZOA* (Ehrenberg) ; CJLIOBRACHIATE POLYPI (Farre). 



(145.) It is only within the last few years that microscopical re- 

 searches have revealed to naturalists the real structure of a series of 

 animals originally confounded with the simpler polyps, with which, 

 as far as external form is concerned, they are indeed intimately 

 related. The observations of Milne Edwards,*f* Audouin, Ehren- 

 berg,^: and Thompson, gradually led the way to more correct 

 and precise ideas concerning the more highly organized genera ; 

 and Dr. Arthur Farre, || by a series of investigations, followed 

 up with exemplary industry and perseverance, seems to have com- 

 pleted our knowledge of the anatomical details of these creatures, 

 in a manner which leaves few points of their economy unknown. 



We shall select an in- 

 dividual, named by Dr. 

 Farre JBowerbankia den- 

 sa 9 as an illustration of 

 the general structure of 

 the BRYOZOA, partly from 

 the complete manner in 

 which its organization has 

 been developed in the me- 

 moir alluded to, and partly 

 because we have had fre- 

 quent opportunities of ve- 

 rifying the accuracy of the 

 descriptions, and the ex- 

 treme fidelity of the draw- 

 ings by which it is illus- 

 trated. 



The animal Bowerban- 

 kia, which is only about 

 a line in length, inhabits a 



Fig. 45. 



sea-moss Zuov, an animal. 

 t Annales des Sciences Naturelles, for Sept. 1828, and July 1836. 

 $ Symbolae Physicae. 



Zoological Researches and Illustrations, Memoir v. ; Cork, 1830. 

 || Philosoph. Trans. Tart 2, for 1837. 



