152 



DEPARTMENT OF THE NATAL SERVICE 



Tuhularia spectahilis (Agassiz). 



Trophosome. Stem irregularly branched; height 

 10 cm. ; with few or no aunulations ; proximal and 

 distal set of tentacles each about 20. 



Gonosome. Gonophores in large, loose racemes; 

 sporosacs without radial canals but with conical apical 

 processes. 



No. 25. 

 Tuiularia spectabilis. 



Tuhularia tenella Agassiz. 



Similar to the preceding species but smaller, 2 cm. high, 

 it is not a distinct species. 



It is possible that 



'vf^- Sub-order CALYFT0BLA8TEA. 



Family CAMPANULARID^. 



Trophosotne. Hydrothecge campanulate, never sessile, never adnate or immersed 

 in the stem or branches; diaphragm always present; hydranth with trumpet-shaped 

 proboscis. 



Gonosome. Gonophores produce fixed sporosacs or free medusae; the medusse 

 when produced usually have otocysts in the margin and have the gonads along the 

 course of the radial canals. 



KEY TO GENERA. 



a Gonophores producing fixed sporosacs in which the planulse are developed. 



h Reproduction by sporosacs which remain within the gonangia during 



the development of the planulse. Campanularia. 



hi) Reproduction by sporosacs which are extruded into a sac at the summit 



of the gonangium, in which sac the planulse are developed. 



. Gonoihyrcea. 



aa Gonophores producing medusoids without mouth or digestive cavity. Eucopella. 



aaa Goiiophores producing free medusae. 



c ■ Medusae globular, with four tentacles at time of liberation Clyiia. 



cc Medusae flatter, with 16 or more tentacles at time of liberation. Ohelia. 



Genus Campanularia. 



Trophosome. Stem unbranched, regularly or irregularly branched. 

 Gonosome. Gonophores producing sporosacs, which remain within the gonan- 

 gium while the planulse develop. 



KEY TO SPECIES. 



Stem fascicled. 



h Hydranth pedicels appearing in whorls. 

 hh Hydranth pedicels given off singly. 



C. verticillaia. 

 C. gelatinosa. 



