TABULAR VIEW OF THE CLASSIFICATION OF ZOOPHYTES. 



ZOOPHYTES. 



ANIMALS of the class Radiata : usually attached at base : having a 

 coronet of tentacles above, and an edentate mouth at the centre : 

 within, an alimentary cavity, to which the mouth is the only opening: 

 androgynous; gemmiparous and oviparous : nerves indistinct (?) : cir- 

 culation very imperfect : no special organs of sense. 



ORDER I. ACTINOIDEA. 



Visceral cavity enclosing the stomach, and divided into compart- 

 ments by radiated lamellaB, having reproductive functions; ovules 

 ejected through the mouth. 



SUBORDER I. ACTINARIA. 



Tentacles 6, 12, or more, in number, not papillose, (with few ex- 

 ceptions,) and perforate at apex : often coral! igenous ; coralla calca- 

 reous, very rarely corneous, cells radiate with lamellae. 



TRIBE I. ASTILEACEA. 



Tentacles many, in imperfect series or scattered ; when gemmi- 

 parous, gemmation superior, the polyps widening above: often coral- 

 ligenous ; coralla calcareous, cells multiradiate, lamellae prolonged 

 outward beyond the cells, and hence the surface in aggregate coralla 

 is lamello-striate. 



FAMILY I. ACTINIDJS. Not coralligcnous, usually attached. 



Genera. Actinia, Anthca, Adamsia, Edwardsia, Ilyanthus, Capnea, Actinecta, Epi- 

 cystis, Actinodendrum, Luccrnaria, Metridium, Actineria, Heterodactyla, Epicladia. 



FAMILY II. ASTH^EID^E. Calcarco-coral I igenous ; tentacles arranged along the mar- 

 gin of the disks; disks sometimes confluent in simple series; coralla, with excavate cells, 

 stars circumscribed, sometimes lobed or linear; lamella 1 , in aggregate coralla, interrupted 

 usually along the middle of the septa. 



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