444 Zoological Society, 



aperturd magnd, ovatd, semiorhiculatd ; faucihus fuscis, albo-bifas- 



ciatis ; limbo labri alho . 

 Altit. 3, diam. 2^, altit. aperturse 2 lin. 

 Hab. ad insulas Gallapagos (on high exposed rocks) ; Cuming. 



5. LiTTORiNA siTKANA. Lit. testd transvei'sim ovatd, obtusiusculd, 

 castaned, transversim grosse sulcata ; anfractibus rotundatis, ul- 

 timo dilatato ; apet^turd ovatd, patuld; columella albd, vix dila- 

 tatd, sulco umbilicari exaratd. 



Altit. 6, diam. 6, altit. aperturse 4 J. 



Hab. ad Sitka, Nova Albion (on rocks, half-tide) ; collected by- 

 Mr. Barclay. 



Very nearly allied to L. groenlandica, but more depressed, blunt, 

 the aperture more dilated. The elevated transverse lines are three 

 in number on the upper volutions, about twelve on the last. 



6. LiTTORiNA GLABRATA. Lit. tcstd ovato-oblongd, acutd, albido- 

 earned, strigis pallide fuscis obliquis pictd ; anfractibus pariim 

 convexis, Icevibus, supremis sub lente lineis impressis 6-8 exaratis, 

 ultimo basi angulato ; aperturd ovatd, rufd ; columelld depressd, 

 violaced. 



Altit. 81, diam. 6, altit. apertures 4|-5 lin. 



Hab. ad Payta Peru {on rocks, half-tide) ; Cuming. Ad Caput 

 Natale (Wahlberg). 



Perhaps only a variety of L. obesa, Sovi^., though easily distin- 

 guished by the pale oblique longitudinal lines : very like L. ziczac, 

 D'Orb. (non Chemn.) 



7. LiTTORiNA L^vis. Lit.tsstd ovato-oblongd, acutdtalblddfCinereo- 

 marmoratd ; anfractibus parum convexis, lavissimis (sub lente 



fortiori vix tenuissime striaiis) ; ultimo basi obscure angulato ; 



aperturd ovatd, fusco -violaced, basi albido-fasciatd ; columelld 



depressd, violaced. 

 Altit. ^\, diam. 6, altit. aperturae 5 lin. 

 Hab. Unknown. 

 This species scarcely differs, except in colouring, from L. obesa. 



8. LiTTORiNA DEBiLis, Lit. tcstd parvd, ovato-oblongd, acuta, tenui, 

 ccerulescente-albidd, interdum lineis obliquis pallidissime fuscis 

 pictd, apice obscuro ; anfractibus Iceviusculis (sub lente lineis con- 

 fertis impressis sculptis), ultimo basi angulato ; aperturd ovato- 

 oblongd, rufd, basi productd et subangulatd; columelld pariim 

 depressd, fuscescente. 



Altit. 4i, diam. 3, altit. aperturse 2 J lin. 



Hab. Unknown. 



A L. glabrata in miniature ; it differs however essentially from 

 that species by its aperture, which is produced into a distinct angle 

 at the base. 



9. LiTTORiNA Sayi. Lit. testd ovato-oblongd, acutd, solidiusculd, 

 transversim multisulcatd, albd, punctis pallide rufis ornatd ; spird 

 violacescente ; anfractibus convexiusculis, suturd profundd divisis; 

 aperturd ovato-orbiculari ; columelld rufd; labro intus albo. 



