HYDROIDS OF THE WOODS HOLE REGION. 



345 



Distribution. Found growing on stones, shells, seaweed, etc. A specimen in the U. S. Fish 



Commission collection is labeled: "Off Nantucket Island." Depth, 23 fathoms. 



Campanularia hincksii Alder. Fig. 25. 



(North, and Durh. Cat. in Trans. Tyneside Field Club, III, p. 127.) 



Tropliomme. Pedicels springing directly from a creeping rootstock, not extensively annulated. 

 Hydrotheca? large, deep, cylindrical, With about 12 prominent square-topped teeth, from between 

 which vertical lines pass dtown over the surface of the hydrotheca. 



Ganosome. Gonangia long, annulated, resembling that of Clyiiajohnstoni, but often not so deeply 

 annulated. 



Distribution. Growing on stones, shells, etc., in rather deep water. A specimen was secured 

 from a depth of 15 fathoms near Newport, R. I. Contrary to the rule among campanularians, the 

 hydranth of this specimen was brilliantly colored, the general color being yellow and the basal part 

 scarlet. 



Ctomp<mulaFfa poterium ( 



fi. 



J.V <'ttiiii>fii>nlftt'/(i fiiiu~'knfi Alder. 



A. Upper part of hydrotheca (enlarged). 



26. Campanularia volubilis (Linn.). 

 A. Hydrotheca (enlarged). 



Campanularia volubilis (Linn.). Fig. 26. 

 (Syst. Xnt., p. 1311, under name of Sertularia mlubilis.) 



Tropliosomc. Pedicels long, extensively annulated, springing from a creeping rootstock. Hydro- 

 thecse small, tubular, with about 10 shallow rounded marginal teeth. 



Ci,tioitomf. Gonagia borne on the rootstock, flask-shaped, with a long tubular neck and small 

 terminal aperture. 



Distribution. Found growing on Sertularetta trienspidata on specimens in the U. S. Fish Commis- 

 sion collection; supposed to be from rather deep water. 



The combination of tubular hydrotheoe with very shallow teeth and extensively annulated 

 pedicels will differentiate this form from others on the North Atlantic coast. 



Campaimlaria minuta, new species. Fig. 27. 



Trophosoms. Stem branching in an irregular straggling manner, attaining a height of about 

 one-fourth inch. Pedicels long, extensively annulated, rising almost parallel with the main stem, 

 which is itself extensively annulated, although there are smooth portions of considerable extent. 

 Hydrotheca very small, deeply campanulate, with 8 to 10 very acute and prominent teeth. 



Gonomme Not known. 



Distribution. Parasitic on Obelia commistnrab's from the piles of the wharf at New Bedford. 

 Collected by Mr. Vinal Edwards. 



This species appears to be quite distinct. It seems to be nearest to C. raridentata Alder, from 

 which it differs in being branched, in the extent of annulations of the pedicels, and in 'the hydrothecse 

 being considerably broader in proportion to their length. 



