THE SERTULARID.E. S.'i 



,S'i fliiliin-l/n riif/oa/i CHAWFIIRH, Ann. :iiiil Mai;., illli srr., X\'I, IS'.i.'i, ],. L'lil. 

 S,-i-lnl,n-i-ll,i riii/nat Mcl.vrosii, Ann. ami Mai:., Mli SIT., XVI. IS'.H;. p. 401. 



njufii Ni TTINi;, llydrnida lYnin Alaska anil l'ni, r rt Sound. IS!li>, |>. 711. 



II/IWK I'.nxxKviK, Norwegian X.n'tli. All. Kxped., 1S!I. p. 77. 



iijiisn HAKTI.AI-H, He\ isi ler Sertularella-Arten, isioo, pp. .">4. 1.1, \<\. \\, titr. PJ. 



i rnijtixii Xrrnxc, IIydn>ids i the \Vmnls Ilnlr Keijiiin, 1901, ]>. illiL'. 

 ,Vi i-hiliin /In 1-iii/ii.tn IlAiiiii'iT. American Naturalist, 1!HM, p. HIM. 

 N rliiliii'i-lln xni-nilii NITTIXU, Ilyilriiids llarrhnan Kxpcilition, 1901, ]>. Is.".. 



i i-iujnisii WIIITK.VVKS, Cat. Marine Invert, eastern Camilla, 1H01, ]>. -"). 

 i-iii/iimi S.KMrNiisxMX, I'.iilrai; til Kumlskalien islainlske llyiln>i<ler, IIMIL', p. (J7. 



Triij>lii>Knni<: Colony attaining a lu-ij^lit of about thrrr-fourth> of an inch. Stem usually 

 unbranched, with several drop annulatiuns on the proximal end. and regular short internodcs, 

 each licaring a hydrothcea and usually several Simulations; nodes very deeply cut and oblique. 

 Hydrothecse not contiguous, barrel-shaped, ornamented with four to six annular rugosities, 

 ending in a short ill-defined square collar; margins square, with four ill-defined teeth and a 

 four-flapped operculuiu. 



(TIIIIOXOIIK . (ionangia large, ovate to almost globular, with a number of annular rugositie- 

 and a small aperture armed with four ill-defined teeth. 



D!xti'!l>iit!H.. New England coast (Verrill); (irand Mauan (Stimpson); West Indies (Nutting); 

 Alaska (Clark); Puget Sound (Nutting): British coasts (llincks); Norway (Sars); North Cajx- 

 (Sars); (Ireenland (Levinsen); Deniuark (AVinther): Iceland (Ssemundsson) ; Sweden (Segerstedt); 

 White Sea (Mereschkowsky); Helgoland (Ilartlaub); coast of Belgium (van Beneden). 



This wide ranging species is quite variable, as would be expected, and the writer has found 

 specimens from our Atlantic coast thai agree quite well with his ,V. x,i<-riifii from Alaska. 



SERTULARELLA AREYI, new species. 

 ( Plate XVII, fifr. (i. I 



Trnpliiixiinii . A fragmentary specimen was all that was secured. It was about one-fourth 

 of an inch high. Stem unbranched. very slender, intcrnodes longer in proportion to their thick- 

 ness than any others of the genus that I have seen, each bearing a hydrotheca near its distal end. 

 Hydrotheca' barrel-shaped, very distant, margin square with four obscure teeth and a four 

 flapped operculum; hydrothecal body marked by two very distinct annular rugosities which 

 divide the body into three nearly equal /.ones. The surface is further ornamented with distinct 

 longitudinal lines or tine ridges. 



(inn<niu>. Unknown. 



D/xt/'tliii/iiui. - Dredged near llahana. Inn to -_'nn fathoms, Bahama Expedition from the State 

 University of Iowa. 



This very distinct and beautiful species I take pleasure in naming after my friend Professor 

 Arey. of ( 'edar Falls. Iowa, one of the members of the expedition that secured the type specimen. 



Tij)><- slide. Cat. No. ixr.'.i:-;. 



Museum of Natural History. State University of Iowa. 



SERTULARELLA TENELLA lAlderl. 

 (Plate XVI II. liirs. L-2.) 



Sn-liiliii-in I-III/IIKII i var. I .FnirxsTi.v. P.ritish X. .. .].hytes, I'll eil.. 1S47, I. ji. Ii4, anil HL'. C, p. til'. 



.Si i hiliirin liiiilln AI.IIEI:. Cat. /.<">ph. Xnrthnnili., Is.'iT, p. -'.'>. 



Sirlii/iirin limlhi HIXCKS, Ann. and Mai:., :!d.<er., VIII, 1S(!I, p. '-'>''. 



\iiiiliii-in li'in-llii XIIUMAX, Kepnrt I'.ritish Assnr., lsi;7, p. L'oo. 



H.i-ttil,ii-i'lliit,'iii/lti HIMKS, P.rit. llyd. /..iiph.. ISliS, p. 1'4L'. 



Xi rtii/iii-il/ii liiiilln MIXCKS, Ann. and Mai:., Illi srr.. XIII. IS74. p. I."K!. 



s,'i-iii/,ii;-//n I, n, /In .MclxTiisir, Ann. and Mai:., tlhser.. XIII, Is74. p. L'PJ. 



Si-rtiiliii'i'l/n It mil, i Seuri.y.K, Xordsee Kxped., 1S74. p. l.'il. 



X'l-tiilni-t'l/it tenetta WIXTIIKH, Xatnrhist. '1'iilsskrift (3), XII, ISSil, p. L'l.'i. 



Sertularella tenella KLECHENPAUER, Nordische Gattungen, issi, p. n. 



Si-rliiliiri'lln ti'iifllii SKIIKHSTKHT, P.idrai: til Kaiineilnmen Hydrniil faiinen. Issn, j). 17. 



X /In/, ii , 11,1 1,'in'llit I.EVINSEX, Viil. Meddrl. N'atnrliist. Furi-n., isni'. p. .Mi. 



