TABLK OF C(ELENTKKATA 3'^ 



Order 4. CAMPANULARI^ (CALYPTOBLASTEA). 



With hytb'othecae and gonangia. Colonial. Generative in- 

 dividuals, when set free, are Leptomedusfe. 

 4 Sections. 7 Families. 



LBPTOMEDUS^. The Medu.sie of this Order. 



Craspedota partly with, partly Avithout otocysts ; ocelli present 

 or absent, gonads on radial canals ; budded fi'om polyps of the 

 Campaniilariae. 4 Families. 13 Sub-families. 



Order 5. TRACHOMEDUS^. 



Hydromedusae without hydrosome (polj'p rftage) ; with mar- 

 ginal sense-tentacles in pits or vesicles, with endoilermal otoliths. 

 Ocelli usually absent. Gonads radial. Radial canals, 4, 6, or 8, 

 often with centri-petal canals. With thread-cell thickening of 

 ectoderm round the edge of the umbrella. 

 4 Families. 8 Sub-families. 



Order 6. NARCOMEDUS.E. 



Craspedota with free auditory teutacrles. Tentacles inserted 

 dorsally on the ex-umbrella, and connected with its edge by 

 peroniums. Radial canals, when piesent, in the form of flat, 

 radial, gastric pouches. 4 Families. 



Order 7. SIPHONOPHORA. 



Free-ewimming polymorphic colonies of Hydromedusa', pro- 

 duced by budding from an original, probably medusoid, 

 indi\'idual. Gonads in gouophores, which, as a rule, are not 

 set free. 



Arranged by (^, SI (After SEDGWICK). 



