242 CLAVID^. 



CLAFIB^. 



TROPHOSOME. — HiDROCAULUS rudimental or developed. Hydraxtus, with 

 scattered iiliform tentacles. 



GONOSOME. — GoNOPHOUES fixed Sporosacs. 



CLAVA, Gmelin. 

 Name. — From Clava, a club, in allusion to the form of the hydranths. 



CoRYNE, Lamarck. 



TROPHOSOME. — Hydrocaulus rudimental, and consisting of very sliort simple 

 tubular processes from the free surface of a HYDRORniZA which is composed of 

 creeping tubes, either distinct or adnata to one another by their sides, and invested, as 

 well as the rudimental hydrocaulus, by an obvious perisarc. Hydranths claviform. 



GONOSOME. — Sporosacs springing from the body of the hydranth at the proximal 

 side of the tentacles. 



In the thirteenth edition of the ' Systema Natura?,' published in 1788, the genus Clava is 

 constituted by Gmelin, the editor of that edition, for a hydroid which had been described by 

 O. F. Miiller, in a paper published in 1775, in the ' Beschaftigungen der Berlinischen 

 Gesellschaft naturforschender Freunde.' Miiller gave no name to the hydroid there described, 

 but under that of 7/y(/r« s^««>««/a he described and figured in the ' Zoologia Danica,' 1777, a 

 nearly alUed species. 



Lamarck, in his 'Animaux sans Vertebres,' omits the genus Clava altogether, and refers 

 Midler's hydroid to a genus to which it has no claim — the Corj/iie of Gartner. 



The genus Coryne, with the extended limits thus assigned to it by Lamarck, was subse- 

 quently subjected to a revision by Sars, who, however, instead of restoring the genus Clava to its 

 rightful place, retains the name of Coryne for the forms properly included under Clava, and 

 institutes a new genus of his own, under the name of Stipula, for the true Corynes of Gartner ; 

 while Ehrenberg follows Sars, objecting only to Sars' name of Stipula on the grounds that it 

 belongs to the botanist, and substituting for it one of his own, namely, Si/ncoryne. 



