48 



Genus SYNCORYNE, Ehrenberg (in part). 



Der. <rvv, along with, and Coryne, a genus of Hyclroicls. 

 [Tlie synonymy given for the last genus applies equally to this.] 



SARSIA (the free zooid), Lesson, Zooph. Acaleph. 333. 

 STIIENYO (ditto), Dujardin, Ann. Sc. Nat. (1845). 

 SYNCORYNE, Allman, Ann. N. H. for May 1864. 



GENERIC CHARACTER. Stem simple or branched, rooted 

 by a creeping filiform stolon, the whole sheathed in a thin 

 chitinous tube, smooth or cumulated ; polypites terminal, 

 more or less clavate ; tentacles capitate, scattered over the 

 body ; gonophores borne on the body of the polypite, and 

 containing medusiform zooids. 



Gonosooid : Umbrella (at the time of liberation] deep 

 bell-shaped or globular; manubrium not reaching to the 

 orifice of the bell, with a simple mouth ; radiating canals 

 4; marginal tentacles 4, springing from ocellated bulbs. 

 The mature zooid has the manubrium enormously developed. 



SYNCORYNE embraces the members of the old genus 

 Coryne that originate free reproductive zooids of the 

 Sarsia type. I follow Allman in adopting for this sec- 

 tion Ehrenberg' s name, which has been widely used, 

 especially amongst continental naturalists. 



There are several points of special interest in the re- 

 productive history of this genus. In the first place, the 

 free zooids of the British species are either identical, 

 or nearly so, at the time of their liberation from the 

 parent stock. The differences, where any exist, are very 

 slight. In one case (S. gravata] the umbrella is desti- 

 tute of thread-cells, which are present in all (?) the other 

 species. S. pulchella has two interradial furrows on the 

 bell, and S. gravata and S. decipiens four. In S. eximia 



