﻿n I s s A. 



Pl.ATK III. 



Speci 



20. 



(.Nfus. Soworliy.) 



.Micn.MD. lOspi'ce.s < 



RlssO.\ fiOSMTA. h'i.<. tfsid suhpi/riiiiiiddfd, suhvi'ii- 

 fricosd, fiili-d : ,iiifr:ii-lihiix sr.r. prujii; .lufiintm 

 auffnhit;^. ../,//,/«.• ,■-«/„//.•, si,;r.-lltrrslr;,tt;.<: ultimo 



n;. 



ra„<-e!lafa, Recluz 



{,yyd.uh.:,rn.„l. 

 rocttH.<ciild. 

 The luiiHKD )ii.~!siiA. 



suture, obliquely ribbed ; spindly sti-i 

 slightly keeled beneath; aperture rath 

 columella rather straight. 



Adams. Trans. Lin. Soc. Vol. Vlli. I'l, .\l 1 1. 1'. L'!, 



Tnrho ™.s/tt/K.s Montagu. 



Turbo pi;cnf„s. MnhltVild. 



Rl<soa plicato, iliehaud. 



Hah. Hritain. 



imrlld 



■ather 

 ar the 

 I, last 

 luare. 



Species i'.i. (Mus. ? Copied.) 



RlssoA AMYSSlcoi.A. h'Is. (Alnnn'a) /r,-ld .vihomld, albd, 

 siipcntr cost, lid, niirr rosl.is jirofinidr sin'atd, ,id 



partfiii iiij 

 rostald, sp, 



iiltn„d .n:jn„-l,U .<j,n-nl,trr 

 ,oji:,nud„td, nl/;,„o ,n,fmrta 

 mariHo; nperlurd laid, lohio n;is<o, rohuido. 



Tin: liKEP-SKA Rl.ssOA. Shell i-athrr ovate, white, 

 ribbed above, deeply striated between the ril)s, 

 spirally ribbed at the lower part of the last 

 whorl, spire .somewhat pyramidal, last whorl 

 large; aperf.uri' broad, lip thick, round. 



FoKHE,s. Brit. .M.ill. p. St;, |>i. hXXVIII. i: 1. 



Hah. North Scotland. 



Species 21. (Mus. ? Copied.) 



KlssOA VEXTKicosA. Bis. (Hiidrohio) tenia suhi^ijra- 

 midatd, la-viijald, pallid,'- j'i,lrd : aiifractlhus 

 quliique, roluiidis ; iiltiiim r,'i,trl,y)^(i, li'viicr 

 nmhUlcato ; aperfuni viit,ji,,i, i;il niin-lt,! reel aim- id, 1, 

 lahio cvtcnio h'liiil. 



The ventricose Rissoa. Shell subpyramidal, smooth, 

 pale fulvous ; whorls five, rounded : last ventri- 

 cose, slightly umbilicated ; ajierturc large, 

 columella rather straight, outer lip thin. 



Ue-MOULINS. Bulletin de la Societe Philosophi(p;e de 

 Paris, p. 8. PI. I. f. 2. 



Hah. ^Mediterranean. 



Species 22. (Mus. Sowerby.) 

 Rissoa lactea. /?;«. {Alvaula) tc.«td alhd, oratA, 



costellis 

 supend' 



rotiiioli 



i;-i, III, ills, sidrallhus. 



sllsl,,„,,ll„dl„„llh„ss,-„l,d. 



,lpta:,i„rap. 



ultimo a„fi;i,-lH ,:t ap,-rt„rd iioojiils, .<„hor,ills. 

 The milk-white Ri,s.soa. Shell white, oval, sculp- 

 tured with numerous rounded, creuulated, spiral 

 riblets, and above with longitudinal ribs ; spire 

 small ; last whorl and aperture large, ovate. 



Species 2-i. (Mus. Sowerby.) 



Rissoa roiMLEA. Rls. {niss,dna) t,-sl,! „lhd. s.,ll.ld, 

 pijraiiildold, ,;,slU iioilosls spiral, b„s rl l,.„.,lhi. 

 ,11 11,1 1 1 1,, IS ,;,„r,'ll.,ld. li,l,'r rosbis f,.r,:,l„ld: </.lrd 

 doinjald. s„l,l,,rtiid, ai.l,-c oOhiso, .i,i/r,trHb,is 

 <iuli,i/,i,', pciiidtliii,! liiiHulo ; apvrliirii ,,r,ilii. inj'rd 

 raiiallioilatd, lablo crasso, crennlatd. 



Tin: roKn.icAN Rissoa. Shell white, solid, pyramidal, 

 cancellated with nodose spiral and longitudinal 

 ribs, pitted between the ribs ; spire elongated, 

 rather tortuous, apex bluut; whorls five, last 

 but one tumid; aperture ovate, with a channel 

 below, 111) thick, creuulated. 



U'Ouiilii.NY. ]\Iollusqnes de Tile de Cuba. 



n,di. Coast of Cuba. 



Species 25. (Mus. Sowerby.) 



OIDES. Ills. {Ainu, I, i) testd alhd. suhfiisl- 

 splr.illtrr proii,l„c,il,'r c,isf,ild {l,iterst,t,,: 

 Is), s,u,r,i ,i„',ll„iii. l„ii,,lt,idl„,illtcr ,;ill 



proJ„i„l,s), sii.^ 



dlsslial ,-r,:„„lalliii ,:,,st,_U 



aiifractlhiis siipr,t sulnrai, 



.spira ,irmnii,aui : 

 ti„dl,:,d,itls, nllliiio 



