CLASSIFICATION OP ZOOPHYTES. HO 



Family II. Sertclarid.e. Ovules enclosed in ovarian vesicles ; buds lateral, per- 

 sistent : coralla corneous, calicles sessile. 



Genera. Antennularia, Plumularia, Sertularia, Thuiaria, Thoa, Pasythea, 



Family III. Campaxtlarid.e. Ovules enclosed in ovarian vesicles; buds lateral, 

 persistent; coralla corneous, calicles pedicellate. 



Genera. Laomedea, Campanularia. 



Family IV. Tubularid.e. Caducous gemmules growing from near the base of the 

 tentacles, and naked ; often coralligenous, coralla corneous, tubular. 



Genera. Pennaria, Tubularia, Syncoryna, Corydendrium, Eudendrium, Coryna, Hy- 

 dractinia. 



iivla. separating thus the fleshy species from the others; the former including Lamarck's 

 orders, 1., II., IV., and the latter, the remainder of his orders. The Zoophyta Heterohyla 

 arc subdivided as follows: 



1. Lithophyta nuUipora. Nullipores, lately shown to be of vegetable nature, secre- 

 ting lime. 



2. Lithoph i/ta porosa. The Madrepore tribe, excluding the Favosites and Cateniporse. 



3. Lithophyta lameUosa. The coralligenous Astrseacea and Caryophyllacea, 



4. Lithophyta jistulosa. Lamarck's "Polypiers foramines," 



5. Ceratophyta spongiosa. Sponges, and some Alcyonidse. 



6. Ceratophyta tubvlosa. The Hydroidea (excluding the Hydridse), the Tubularidse 

 in part, and some of the Bryozoa. 



7. Ceratophyta foliacca. Bryozoa. 



8. Ceratophyta corticosa. The Antipathi and Gorgonidse. 



9. Pennce marina. The Pennatulidae. 



Blainville. — Blainville includes under the name Zoophytes, the fleshy Actinia' as 

 well as the coralligenous species, and also the Echinoderms, Acalephae, and Sponges. 

 The Sponges constitute his " Amorphozoaires," and the other species, the " Actinozo- 

 aires." The " Actinozoaires" are distributed as follows : 



Class I. " Cirriiodermaires," including the Echinoderms. 



Class II. " Arachnodermaihes." The Acalcplia . 



Class III. " Zoanthaires." The Actinidse, Zoanthida?, together with the coralligenous 

 Astrseacea, Caryophyllacea, and Madreporacea, excluding from the last the Antipathi, 

 Milleporse, and Favosites, nearly as was done bv Lamarck. 



Class IV. " Polypiaires." Includes the MilleporsE, under which name Blainville 

 follows LamouroLix in comprising various unallied genera, characterized by the small 

 non-radiate cells of the corallum ; and in other divisions, the Bryozoa and Hydroidea. 



Class V. " Zoophytaires." Corresponding to the Alcvonaria. 



We perceive in this classification a great advance beyond those preceding it. The 

 Alcyonaria, before widely distributed, are here united in a single group: the Actinidse 

 are arranged with the coral polyps ; the Bryozoa are mostly grouped together, and the 

 Hydroidea are brought into close association, although still the Hydra forms a sub-class 

 next to the Sertularidse, instead of being united with them. 



Ehrexberc — Ehrenberg divides Zoophytes — his Anthozoa — into the two orders, 

 Zoocorallia and Phytocorallia. The former. "Animal Zoophytes," contains the fleshy 



