106 



Campanopsis duhia bears a considerable resemblance to the 

 species I have described. Dr. Stechow's description of C. duhia 

 is as follows : — 



" Hypostome conical. Tentacles in one whorl, 14 18 in number 

 " (in the preserved material a membrane between the roots of the 

 " tentacles is no longer visible). 



'' Hydranths, when contracted, spindle-shaped ; when extended, 

 " with a distinct neck ; a deep waist not far below the wreath of 

 " tentacles, as in the Haleciid Ophiodes ; the lower part of the 

 " hydranth not always sharply marked oS, but often ending with 

 " a pecuhar narrower part. Hydrocaulus unbranched, about half 

 " the length of the hydranth, with a distinct ' periderm,' sharply 

 " separated from the body of the hydranth, distinctly ringed ; 

 " springing from the hydrorhiza only at wide intervals. Theca 

 " (cup) entirely absent. Hydrorhiza reticulate, surrounded by a 

 " periderm. Medusa : an {Octorchis) Eutima-tyi^e.'' 



Locality. — The northern part of the Mediterranean. 



Dr Stechow refers to the specimens bred by Claus from an 

 " Octorchis " (Claus, Arb. Zool. Inst. Wien, 1881) similar to the 

 above, but with a smooth periderm shghtly developed instead of 

 the well-developed and " distinctly ringed " periderm of Cam- 

 panopsis dubia. In this feature my specimen resembles that of 

 Claus, but differs from it in the entire absence of a membrane at 

 the tentacle bases. Claus obtained medusa buds on the body of 

 the Hydranth, whereas in my specimens they arise from the Hydro- 

 caulus on a short stalk ; Dr. Stechow's specimens unfortunately 

 had no gonophores developed. The young medusoids I obtained 

 certainly appeared to be anthomedusan. 



In view of these facts I am inclined to think that, despite the 

 undeniable resemblance between Campanopsis duhia, Claus' 

 specimen and mine, the three specimens are quite distinct. 



If I had remained in ignorance of Campanopsis duhia I should 

 probably have placed the new specimen among the BougainviUiidse, 

 but until the adult medusoid is obtained the question of its 

 systematic position must remain unsolved. 



