168 



id Ihc Iciijdh, dnr.;il iii.ii-ni "dilly an lied, lei in n i;i! in;; both in lionl ;ni(l behind 

 wilh ;i sh|dil aiijde, venli.il iii.iim deeply Miiii;ilr<l ill Ihc middle ;ind rmviiij'. 

 l-Vi nlv ii|ivv;ii(l . behind, HI! IKH . lidinly . nnewhal nblnpielv loinidcd, posleiioi 

 slightly ailj.Mil.ile 111 Hi" 1 middlr; seen dOf'^'ly, oblon;- OVate in onlline, with 

 tin- vi.-.ilc'.l widlli !.n behind ;ind ,il>ni c(|ii;il |o ' , nl tin- leiiidil, Iti.lli 

 lidiiilies i.blir.ely pointed, Ihc ;III!CIKH ininli nai lowei lli;ni tin- posldior. 



Valvel nthci nin'(|ii;ii the nriii one ovciiappmi'., the idi conspicuously along 



(In dm ,.il laee, ml. i<e densely pilled ;ind piovidcd will) sealleicd ndcd 



Illbeieles, in,ii"iii.il /.OIK- i.illid I. in. id .-mil ciosscd \>\ M.nicwh;il li.-,l;nil poir 



i II.IIIIH !,, .nih IIMI ,nid pnslcllol cdr.cs (Inlhcd willl Si.illcicd slill ll.ni 



Aiilcmn ;iiilciin;r willl lln- Ifi nmul p;ul nun li IMIMMM Ih.ni Ihc disl.-il s 



.I UK- i..r,,ii p.-ni, liisi jiiini coinpjiraiivi'ly small, scarcely exceeding m 



l Ihc middle niic, spines <>! lln- l;illci very sin , ,md denlu ul;i|cd on Ihc 



niili-i .-dm'. I'o-.lc ;inlcini;r wilh the lla^clhiiii vriy (iiinscly dcvelMpped. 



I cv . . (.inp.n.-ilively lolmsl PosU-rioi exlieiinly ol hndy lipped l>\ ;i highly 

 chilini ,cd .piniliiiiii PMHTS-, 



Mali', SlU'll coiiip;ii;ilivfly U-ss lii^li lli.ni in U-nnilc, with the dois;il 

 margin m-.nly straiuhl ;ind Hie venli.il IIKHC deeply Miin.iled. ( '.opnhlivr ;ippen 



(1,'lj'i'S vt'iy l.n:'e, wilh Ihe h;is;il p.-nl nded . | n;id 1 .1 1 1: n l;i I in sh;ipc, ;illd 



. iidni!' oil In-low il slendei pioc'css pointing l>;u k\v;nd-, .ind shi-lilly Inlolied 



;il ihr c.xiiciiniy, hein^ i rovri pio\nl,i in idc \\-iih ,i dark-coloured hooked 



String nnviny ilownvv.nd'.. Id iniii;il p.nl pmdmed in lionl and hi'lnnd lo 



.Hiilc l.ippel, Ihe poslciioi ii.iimuei than Ihe anldior. 



(inliiiii nl -.hell daik ivdilicli-brown, with the marginal /one li^liler, opaque 



whilish; limbs ol a brownish yellow Inn-. 



I en-ih ..I .idnll lem.ilc ('./ I mm., nl male M>me\vlial I 



/v'< ///<// A-.v. Ihi', i. -mi was deseiibed and honied as e.u l\ as Ihe yeai I 



by O. l ; f. Miillei, ami oii-dd hi be cnnsideied as the lypc ol Ihe pn enl "eini - 



II is easily leco^nisrd limn mosl ol Ihi 1 olhei ( \lliend,i' b\ the daik icddish 

 blown eolom ol Ihe shell. 



(V<v///rmr. lln. is one ol oin coiiiiiioiicsl ( '.yJheiid.T, beini; loimd lalhei 

 abiindanlK all loimd Ihe whole ol Hie Noi wrs-.ian coasl in the lilloial /on 

 amoii!-, alra-. .md is ulli-n lelt in tid.il pools on the hea h 



nistiihutnui. hnlish Isles, Kallir.al, leel.md, ( neenland, I'.av >l 

 I .iwicnce. 



/ o.s-.v/V. Noiway, Hnlish Isles, ( anada 



lU'll 



|ue 



