460 CLASSIFICATIONS OF ZOOPHYTES. 



dia, Caeloptychium, Siphonia, Myrmecium, Scyphia, Eudea, Hal- 

 lirhoa, Hippelimus, Cnenimidium, Lymnorea, Chenendopora, Tra- 

 gos, Manon, Jerea, Tethium. 



PSEUDOZOA. 

 Organized bodies not animal but vegetable. 



Class I. Calciphytj;. 

 Family 1. Corallince — Corallina, Jania, and Flabellaria are British 



genera. 

 Family 2. Fucoideoe — of wbicb tbere are no native examples.* 



The researches of Professor Grant, (1827) and of Milne 

 Edwards, (1828) into the anatomy of the Flustrse, and the 

 establishment of the class Polyzoa, by Mr. J. V. Thompson, 

 were important steps towards a better and a pliysiological clas- 

 sification, although their bearing was not recognised by the 

 leading systematists of the day. It was a proof of Ehrenberg's 

 clearer views of their great difference in structure when he 

 divided zoophytes (1884) into two grand sections, the Arftho- 

 zoa and Bryozoa, — the latter name synonymous with the 

 Polyzoa of Thompson, with whose works, as well as with 

 those of Andouin and Milne Edwards, Ehrenberg was unac- 

 quainted. It is unnecessary to give his definitions of these 

 classes, for they are essentially the same adopted in the body 

 of this book ; but in Ehrenberg"'s system many groups are 

 misarranged, and placed in the class to which they do not 

 belong. Ehrenberg has, however, introduced several ingeni- 

 ous views and important systematical changes •,'\ and his essay 



* It appears that Blainville soon found reason to alter tliis arrangement, and he 

 now adopts one very similar to that followed in this work, dividing the class Poly- 

 piAREs into four sub-classes, — " les Hydriens, les Alcyoniens, les Actiniens, et les 

 Polypes douteux." — See Ann. Nat. Hist. iii. p. 47. 



For Mr. J. Hogg's classification of Zoophytes, founded on structural peculiarities of 

 the tentacula, see the Annals of Nat. History, vol. iv. p. 366 (1840). 



+ An outline of the classification of Ehrenberg. (1834.) 



CURALIA. 

 A. Anthozoa. 



Ordo I. — ZoocoRALLiA. III. — Fuugina. 



TrIBUS I. — ZOOCORALLIA POLYAC- TrIBUS II. — ZoOCORALLIA OCTAC- 



TINIA. TINIA. 



Familia I. — Actinina. IV. — Xenina. 



II. — Zoanthina. V. — Tubiporina. 



