354 mXnual of natukal histoey. 



sides. Polypary horny, fistular, external, plant- 

 like. 



1. Family. — Clavate fleshy-Polyps (Corynidae). 



Ovisacs budding from the bases of the ten- 

 tacles ; polyps naked, or with only a rudi- 

 mentary polypary. 



2. Family. — Fistular-Polyps (Tubulariidse). Ovi- 



sacs budding from the bases of the tentacles ; 

 polyps with the tentacles whorled ; polypary 

 fistular, horny, simple, tortuous or ramified. 



3. Family. — Plant-like Polyps (Sertulariidse). Ovi- 



sacs in the form of horny, deciduous capsules, 

 scattered on the polyparies ; polyps with 

 simple tentacles lodged in sessile cells ; poly- 

 pary tubular, ramified, and plant-like. 



4 Family. — Bell-bearing Polyps (Campanulariidae). 

 Ovisacs in the form of horny, deciduous cap- 

 sules, scattered on the polyparies ; polyps 

 with a simple series of tentacles ; polyp-cells 

 on ringed stalks, terminal, campanulate ; 

 polypary horny, plant-like, 



5. Family. — Freshwater-Polyps (Hydridse). Pro- 

 pagation by buds and ova, which develope 

 themselves on and in the body of the parent. 

 Polyps locomotive, free, single, naked, gela- 

 tinous, with long, simple tentacles. 



II. ORDER — Zoanthoid-Polyps (Zoanthoida). 



Polyps single, free or fixed, fleshy, naked, or with 

 calcareous polyparies with radiating lamellae ; ten- 



