360 



BULLETIN <1V THV. UNITED STATIN KfSII 



Ssrtularia complex.a Clarke. Fig. 57. 

 (Bull. Mil". Comp. Zool., vol. V. X.>. in. p. lil'i. i 



Ti-iiiihiixnnii'. Colony an unhranclu'd erect stern uHaijiin^ a height uf about three-fourth. 1 -' inch' 

 - tubular, abruptly curved outward dist:dly, aperture bilabiate; the luo hydrothecse of a 

 pair ailnate for more tluin tlieir proximal half. Stem hiternodes below Iiyilrci1hei-;e slender, showing 

 immediately below the h\ dml'ieca- short internal, cliitindiis |inu-esses pointing [downward from the 

 hydrothi'cal Hooiv. llvdran'.lis with conical |ir..li.wis and ab<n;i -0 tentacles. 



Qonotome. < ;onani;ia [irodiiei'd iHiially in pairs at font of stem, ovoid in form, beautifully and reg- 

 ularly annulaU'd, ivsemblinj; Chinese lanterns, collar terminal, \vith circular aperture and o]iercnlum. 



Dixli-iliiiliiin. Found by Mr. Walmsley near Woods Hole, and afterwards by myself, jfrowinj; in 

 ;/rei'.t quantities over seaweed dredged from the bottom near Nobska 1'oint. 



.")li. *i ,'l/iliiriit rwith'hif >r<-Cr.. upon which ll<l>:lln fi>fi'<i,-<itii lA.^.j 



is Lrrmvint: n-^ n |>arusitf. 

 A. Lateral view. H. Front vi<'\\. 



."7. >v rlt/l'ti-lii cii)iii>lt'.,-(i Clarke. 



This interesting sjiecies was originally found by the li/nke off the coast of Yucatan, then reported 

 from Australia by Professor Bale, and finally proves to lie common near Woods Hole, where it has 

 doubtless often been mistaken for >'. /iinui/n, 



DIPHASIA. 



Trcphosome. Colony regularly branching; stems and branches regularly divided into internodes, 

 facli of which bears a pair of opposite hydrothefje. Ilydrothecal margins even or sinuous, with an 

 internal operculum consisting: of a single piece. 



< iiiimaiiini'. Cionangia cleft above into leaf-like segments, and containing a spherical, internal 

 marsupial chamber. 



Ki a In .<tii'i-i?s uf Di]>lnixiii jniiiitl in Ilif Wiintlx Hull' ivi/inii. 



Width of a pair of hydrothecse at base nearly equal to their length D. fallax, 



Width of a pair of hydrotheca" at haso not much more thnn half their height D. rosaccn. 



