CLTTIA. 113 



nished with sixteen long tentacles ; and additional litho- 



cysts are also developed, one on each 



side of the four primary tentacles 



(woodcut, fig. 16). The ovaries are 



"brownish purse-like glands, extending 



towards the base of the proboscis." 



I have never witnessed these changes 

 in C. Johnstoni ; but I have found the 

 sporosacs present before the escape of the gonozooid, and 

 laden with ova shortly after; so that the reproductive 

 functions are discharged in the earliest as well as in the 

 later stages of its existence. Wright has made similar 

 observations, and has seen the ova developed into young 

 Campanularians in about a week after the escape of the 

 zooid from the capsule. 



Agassiz is of opinion that three of Gegenbaur's species 

 of Eucope (E. campanulata, E> thaumantoides , and E. 

 affinis) are only different ages of Clytla bicophora ; and I 

 have little doubt that the opinion is correct. 



C. JOHNSTONI, Alder. 



SKRTULARIA VOLUBILIS, Ellis Sf Soland. Zoopb. 51, pi. iv. figs, e, f, E, F. 

 CAMPANULARIA VOLUBILIS, Johnst. B. Z. 107-108, woodcut, fig. 18; Coucli, 



Corn. Faun. pt. 3. 40, t. xi. fig. 1 ; Hincks, " on Keproclue- 



tion of Campanulariadoe," Ann. N. H. for July 1852, pi. iii. 



fig. 5. 

 JOHNSTONI, Alder, North. &Durh. Cat. in Trans. Tynes. F. C. 



v. 126, pi. iv. fig. 8 ; T. S. Wright, Ed. New Phil. Journ. 



(N. S.) for April 1858 ; Allman, Proc. Boy. Soc. Ed. for 



Dec. G, 1858. 

 EUCOPE CAMPANULATA, E. THAUMANTOIDES, E. AFFINIS (the free zooid), Gegen- 



baur, Syst. d. Medus., Zeitsch. f. wissench. Zool. viii. 243, 



244, pi. ix. figs. 8, 9, 10, 12, and 13. 

 CLYTIA BICOPHORA, Agassiz, N. H. U. S. iv. 304, pi. xxvii. figs. 8, 9 ; pi. xxir. 



figs. 0-9. 



Plate XXIY. fig. 1. 

 STEMS long, transparent, simple or slightly branched, 



