139 



neo-cinered ; anfractibus conveiirisculis, transverse striatis, et serie 

 triplici spinularum ornatis ; spinis supremis solidis compressis, 

 medianis fornicatis majoribus, infimis fornicatis confertissimis ; 

 aperturd suborbiculari, violacescente ; margine umbilici acuto, pro- 

 minente. 



Altit. 8, diam. 8, altit. aperturse 4| lin. 



Hab. Guimaras, insula Philippinarum. 



This very interesting species was found on rocks at high ■vvater- 

 mark ; its operculum is orbicular, horny, and consists of 5-6 volutions. 



1. LiTTORiNA LEMNiscATA. Lit. testd purvd, ovato-oblongd, nigrd, 

 striis transversis et lined triplici, elevatd, moniliformi sculptd ,• 

 anfractibus planiusculis ; basi nodulosd; aperturd spiram non 

 tEįuante, nigrd, basi albo-fasciatd ; columelld depressd, basi sub- 

 effusd. 



Altit. 4į, diam. 3, altit. aperturse 2\ lin. 

 Hab. Cuba? 



2. LiTTORiNA ASPERA. Lit. testd oblongd, acutd, crassd.fuscescente, 

 lineis nigricantibus longitudinalibus obliguis pieta, ad basin sub- 

 angulatd; anfractibus paritm convexis, liris elevatis transversis 

 sculptis ; aperturd ovatd, fuscd, fasciis duabus albidis ; labro intus 

 albido, fusco-punctato . 



Altit. 8, diam. 5\, altit. aperturae 4į lin. 



Hab. Ad oram occidentalem Americse borealis (from Sitka, New 

 Albion, found on rocks at low water by Mr. Barclay ; from Mexico, 

 found by Hegewisch ; from Conchagua, province of San Salvador, 

 Central America, Cuming). By the character of its aperture, this 

 species belongs to the group of L. ziczac, L. zebrą {Phasianella pe- 

 ruviana, Lamarck), and is easily distinguished from all allied species 

 by its sculpture. 



3. LiTTORiNA picTA. Lit. testd pūrvd, ovatd, acutd, basi obscure 

 angulatd, transversim striatd ; fascid ad partem superiorem an- 



fractuum, alidque ad basin albis, lineis fuscis longitudinalibus pic- 

 tis ; aperturd semiorbiculari, fuscd, basi albo-fasciatd ; columelld 

 satis comjjressdfere rectilined. 

 Altit. 4, diam. 3, altit. aperturae 2\ lin. 

 Huh. ad insulas Sandwich. 

 Var. jS. Aiifractibus superne angulatis, parte mediand anfractūs ul- 



timi albido-marmoratd. 

 This species has uearly the shape and size of L. Basteroti {Turbo 

 petrctus, Turbo carvlescens , etc), which I believe the true Turbo neri- 

 toides of Linnseus, and the colouring of the intemipted variety of L. 

 ziczac. 



4. LiTTORiNA PORCATA. Lit. tcstd poTvd, ovūtd, obtusiusculd, um- 

 bilicatd, e ccerulescente-albidd, lineis elevatis distantibus porcatd ; 

 aperturd magnd, ovatd, semiorbiculatd ; f aucibus fuscis , albo-bifas- 

 ciatis ; limbo labri albo. 



Altit. 3, diam. 2į, lūtit. aperturae 2 lin. 



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



