THE SEKTt'LARID^E. 115 



X, rtiilnri'1 iiliifliiKi AI.DEK, Cat. Zooph. Xorthumli., ls."i7 

 x< rhiliiriii nliiiiinii ALE.\AXIIKI; Ac; \SM/, North American Aralepha-. I si;.\ p. ]43. 

 Xrrtu/iiriti nl>iiiina HEI.I.KK, /ooph. and Krhimulcrmeii, I Mis, p. .'H. 

 SertlUaria abietina VAN BE\I:I>I:\, Fauna Litlnralr. Isilii, p. |s.">. 

 i ii/iietiiin HIM KS, British llydroids, ISiiT, p. L'liti. 

 btetina SCHPLZE, Xonlsee K\prd.. IS;L', p. I:;L'. 

 Serlularin nbietinn Mcl.vrosii, Ann. ami Mai:., 4th SIT., XIII, 1S74, p. :>13. 

 S,iiii/nrin (iliiftinn MERKSI HKOWSKY, Ann. ami Man., -""Hi SIT.. 1. ls7s. p. :;i'l, 

 Xi'i'liiliinit uli'ii 'linn WIXTHKK, Xatnrhist. Tids.-kril't, ls7H-sn, p. I'.MI. 

 Abietinaria abietina KiitcHKxr.u-Eu, Xordisrhe i iattniiiri-n. lss4. p, :;i. 

 rin nliiiiinii BEKIMI, (iriplepolyper fra Kara llavrt, lss7. p. :;.",.Y 

 riii n/ii,'liiin AI.I.MAN, Cliallfiincr Report, llydroida, I't. L', ISSs, ],. c,j. 



<il,i,1inii DHIKS( n, Tektiiniwlif Studii-n, IS'.io. ].. L'IL'. 



lii iilili'iiiid MARKTANNER-TURNEEETSCHEB, llyilmiden dcs k. k. natin-lnst. llipininscunis, isiio, p. i>4, r ). 

 i nliiitina BofRNE, Hydn.ids of Plymouth, isntl, ],. :>!I7. 

 <iliii'tiiKi LEVIXSE.N, Vid. Mcddel. naturh. Forcn., ISHL', p. .Mi. 

 s,-i-lnliifin ii/iii'Hiiii CKAWKOKH, Ann. and Man., nth SIT., XVI, IS!)"), p. jiil. 

 \rtnlaria iifiii'tina HAKTI.ACB, Hydroincdnscn Hrl^olands. 1.SH7, p. 4"il. 

 Tlniiitrin nliiftiini HoNXEViK, Xurwi-fiian Xorth All. Expcd., 1S1IH, p. HI. 



Mrtuluri'llu nliiiiinii Xi-rriM;, Hydroidsof tlu- W Is Holt- IVnion, 1SKI1, p. Mill. 



SiT/i/l'ii-i'i ii/ii,'tinn WHITKAVICS, Cat. Marine Invert. Eastern Canada, liiill, p. l!. r i. 



IHjilmxiit iiliirlinii S.KMrxnssoN, Bidran til Kundskalien inn islandske Ilydroider, p. MIL', p. li"). 



7'riij>/i(>xiiii . Colony sometimes attaining ;i heio-lit of 12 to 1-1- inches. Main stem heavy. 

 Hexuosp. or feebly geniculate, divided into fairly regular internodes liy oblique nodes, eaeh 

 internode bearing a branch and two liydrotliera 1 on one side and one hydrotheca on the 

 other. Branches regularly alternate, })innate. themselves >ometimes branched, divided into 

 internodes of very irregular length, bearing from two to many hydrothecee. Hydrotheca' very 

 large, subopposite to alternate, flask-shaped or bottle-shaped, gibbous below, narrowing above 

 into a gracefully curved neck ending in a round smooth margin which incloses an aperture 

 directed upward and slightly outward; distal one-third entirely free from the hydrocaulus; 

 operculnm (seldom seen in preserved specimens) consisting of a single adcauline flap. 



(jnitiixiinii . Gonangia borne on the upper sides of the branches, rather small in comparison 

 to the hydrotheca', oval, with a very short pedicel, a short collar, wide terminal aperture, and 

 an operculum. Some specimens are more or less amiulated. 



DixtrHiittlon. One of the common species on European and British coasts. Woods Hole 

 Region (Nutting). Newfoundland (Stimpson), (iulf of St. Lawrence (Whiteaves), Labrador 

 (Packard), Mediterranean (Pallas), Adriatic (Heller), Belgium (van Beneden). British coasts 

 (Hincks), North Cape (Sars), North Sea (Schul/e), Polar Sea (Bergh), Iceland (Ssemundsson), 

 (ireenlaiul (Fabricius), Alaska (Lieut. ( reo. M. Stoney, I'. S. Navy), Bering Sea (,l/////vw,x 

 collections), off Washington (Albatross collections); . I ll><ifrxK Station _;s(i4, hit. N. 4.s i'i', long. 

 W. U-2 :>!'. -is fathoms; Station SI. '.it, lat. N. :!T 47' i'o", long. \V. li':i In'. i'T fathoms; Station 

 :-54-i:-!. lat. N. 4.s i:r 30", long. W. W 11' L'n", <T fathoms Station S:,4i. lat. N. 54 !_''. long. 

 W. Uir," 42', 3<l fathoms; Station 3552, lat. N. 5f, L'S'. long. W. Kin i'S'. 54 fathoms. 



This species flourishes best in northern waters, and 1 have no record of its occurrence south 

 of Massachusetts on our east coast nor ~nuth of Washington on the Pacific. The Mediterranean 

 record of Palla-> >eems somewhat doubtful. It appears to thrive lies) in depths of Mil to .100 

 fathoms. 



ABIETINARIA VARIABILIS (Clark). 



ll'late XXXII, tins. 4-7.) 



Nertulnrin mrinliiHit CLARK, Alaskan Ilydroid.-, 1S7U, ]i. _-l. 



ruriiiliHix KIUCIIENP AIKK, Nordische Gattungen, issi, p. ;!">. 



i rnrinliiHx Xt'TTlxo, llydroids of Alaska and E*Uget Sound, IS'.KI, p. 741. 

 i nii-inliilix Xi TTIM,, llydroids of the Ilarriinan Kx]ied.. I'.inl, p. Is.'). 



nii!'. Colony attaining a height of about 5 inches in largest specimens. Stem stout, 

 rigid, flexuose, divided into fairly constant internodes each of which bears two hydrotheca' and 

 a branch on one side and a single hydrotheca on the other in -ome specimens, while in others the 

 internodes are long and irregular and the branches far apart. Branches alternate typically, but 



