338 MANUAL OF NATUKAL HISTORY; 



solid axis ; margin with cirrhi or folicaceous appen- 

 dages pendent from the lower surface. 



1. Family. — Simple Jelly-fishes (Eudoridse). Sim- 



ple, without true tentacles, peduncles, or arms. 



2. Family. — Tentacular Jelly-fishes (iEquoreidse). 



Circumference of body, and sometimes the 

 mouth, surrounded by tentacles. 



3. Family. — Pedunculate Jelly-fishes (Oceaniidse). 



Gastric cavity prolonged into a sharp pedun- 

 cle, at the end of which is the mouth, sur- 

 rounded by four brachial appendages. • 



4. Family. — Proboscis Jelly-fishes (Geryoniidae). 



Lower and central part of body prolonged into 

 a proboscis-like appendage, either simple, or 

 provided with arms. 



5. Family. — Jelly-fishes proper (Medusidse). With 



a central mouth; lower surface furnished with 

 more or less numerous ramified brachial ap- 

 pendages. 



6. Family. — Root-mouthed Jelly-fishes (Ehizostoma- 



tidse). Without an open mouth in the centre ; 

 nourished by suction through the tentacular 

 ends of their ramified peduncle. 



TTI. OEDEE. — Cirkigrade Sea-Nettles 

 (Cirrigradse). 



Body oval or circular, gelatinous, supported by an 

 internal, sub-cartilaginous body, and with extensile, 

 tentacular cirrhi pendent from the whole of the under 

 surface. 

 1. Family. — Velellas (Velellidse). Body discoid or 



