352 



BULLETIN OF THK ITNITKI) STATF-S FISH COMMISSION. 



e. Unknown. 



it. On piles, Greenport, Rhode Island. 

 I have a specimen that to a certain extent intergradcv between this species ami the preceding, 

 and therefore suspect that the two species may be identical. 



(iOXOTHYRjEA. 



Trii/'liimiiiit'. Stem not fascicled, branched. Hydrothecse campanulate, with toothed margins. 



OtmOfOme. The gonaugia producfcto fixed, medusil'on.i sporosacs with apical filiform tentacles. 

 The spornsacs, \\lien nearly mature, pass out of the 

 gonangiiim and remain attached to its top until the 

 spermato/oa or planulie are discharged. 



Gonothyrsea loveni Alhnan. Fig. 42. 



(Ann. mid Mas;, of Xat. Hist., 3d scries, vol. 13, p. 374.) 



ie. Stem irregularly branched, attain- 

 ing a height of one-half to three-fourths inch, slightly 

 flexuose, annnlated above origins of pedicels. Pedi- 

 cels short, with 2 to 5 annulations. Hydrothec.-e 

 deeply campanula!?, gracefully tapering toward base> 

 very thin and transparent aronnd margin, which is 

 quite variable in its dentition, the typical teeth being 

 turreted and squared at the ends. 



Gotuisumi'. (ionangia large, long, obconic, borne 

 in the axils of the pedicels, each bearing, when ma- 

 ture, :> to 5 sporosaes or modified medusa 1 on its sum- 

 mit. The sporosacs are attached to the top of the 

 gonangium by short pedicels, and have at their upper 

 end acirclet of short tentacles. They discharge their 

 contents before becoming free. 



I>irti-ilinti(iii. On shells, stones, etc., in shallow- 

 water. Dr. II. C. Bumpus sent the writer some beau- 

 tiful specimens from the coast of Rhode Island. 



Goi><>tliiii-:m ifnuix Clark, fig. 43, is reported from New Haven. There is no point either in the 

 original description or in the figure published by Dr. Clark that enables me to separate this species 

 from typical specimens of <:. lnn-ni from England. Professor Yen-ill says of this species: "Closely 

 allied to (1. lumii, but has narrow, elongated, obconic gonotheca;." As these terms are precisely appli- 

 cable to the gonangia of (j. loveni, I can not perceive any basis for considering (.!. li'unix a good species. 



GonotJiynra Injalina Hincks is also reported by Professor Verrill as occurring off Watch Hill, 

 Rhode Island. The writer, while at Plymouth, England, found completely intergrading specimens 

 between this species and < S. lun-ni. 



HEBELLA (modified). 



4^. (iiiiiofhifl T :i'it J 



. <;<nxiUii/r;fit tcn/ii* Clark- 



iiiiii: Pedicels arising from a creeping rootstock. llvdrothecic tubular, with entire 

 margins and without opercute. Ilydrothecal cavity separate'! from that of the pedicel by a partial 

 septum. 1 1 yd ran th with a conical proboscis. 



(,'tiiiiisniiir. (ionangia producing t'r. : 'e medus.'e. 



The genns as here defined would include several species which most authors place in the genus 



Kei/ in s/ierii'x <>f Hi'lirllii fimiiil in tin 1 \}'iuiijs lln'.i' ri'i/iini. 



issiiitlly in pnirs. ilnulily curved. Species ulini'-t always nar.-isitic on ('//'/-ic/'a <<>,- u'fniti ..... II. ralcatata. 

 HydrotlH'Cit irregularly distribuled. small, nut douMy curvc'l. Sprric< p:'.r:i-itie mi \iirious hydrnids ...... //. vj'/'"/' "(. 



