28 • AMERICAN HYDKOIDS. 



The genus as thus described would include all of the Campanularidse of later writers and 

 is the type-genus of that family. Hincks, as was so often the case, saw the availabiUty of 

 the gonosome as a means of separating genera, and adds to his description of the trophosome 

 the fact that the gonophores contain fixed sporosacs which mature their products within the 

 capsule. 



The type of this genus is Campanularia verticillata. 



KEY TO THE AMERICAN SPECIES OF CAMPANULARIA. 



Colonies regularly branched. 

 Stem compound. 



Pedicels arranged in verticils : verticillata. 



Hydrothecse sessile subrufa. 



Stem monosiphonic. 



Margin crenulated tulipifera. 



Margin bimucronate neglecta. 



Margin regularly toothed. Teeth about 7, acute oblvsidens. 



Margin smooth . 



Pedicels decidedly shorter than hydrothecse. 



Stem straight, hydrothecse almost sessile rigida. 



Stem undulating, margin with thickened band. Hydrothecse sessile marginata. 



Stem flexuose. 



HydrothecEe campaniilate calceolifera. 



^ydrothecae long and tubular fragilis. 



Branches from all sides of the stem amphora. 



Pedicels as long as hydrothecse, or longer. 



Stem geniculate angulata. 



Pedicels ordinarily about as long as hydrothecse flexuosa. 



Pedicels ordinarily about twice as long as hydrothecse erigua. 



Colonies not regularly branched . 

 Margin smooth. 



Hydrothecal walls greatly thickened below Integra. 



"Walls not noticeably thickened, hydrothecse "V'ery large spiralis. 



Walls not thickened, hydrothecse not so large ritteri. 



Margin crenulated, gonangia bowl-shaped speciosa. 



Marg'ln crenulated, gonangia with tubular neck magnifica. 



Margin toothed. 



Hydrothecal walls with vertical lines or plications. 



Hydrothecal teeth truncated at top, pedicels smooth hinchsii. 



Hydrothecal teeth rounded, pedicels annulated groenlandica. 



Hydrothecal teeth acuminate. 



AValls thick and rigid, pedicels short tincta. 



Walls thin, pedicels long Mncaidi. 



Hydrothecal walls neither lined nor plicated. 

 Pedicels not regularly annulated, smooth. 



Hydrothecse ^'ery large (2 mm. high), tubular • macrosq/pha. 



Hydxothecae very large, campanulate gigantea. 



Hydrothecse medium or small. 



Teeth sharply pointed - raridcntata. 



Teeth truncated above, or even emarginate. 



Teeth 14 Ixvis. 



Teeth 8, bimucronate '. hrevicaulw. 



Pedicels annulated . 



Hydrothecse obconical, upper walls collapsible ptydiocijalhus. 



Hydrothecse typically urceolate, margins often reduplicated urcmlata. 



HydrothecEe large, campanulate, thin d"nliculata. 



Hydrothecse deeply campanulate or tubular. 

 Gonangia flask-shaped. 



Neck short tubular volubilis. 



Neck long tubular fvsiformis. 



Gonangia cylindrical, annulated coronata. 



Twelve sharply pointed hydrothecal teeth hesperia. 



