Zoological Society. 443 



A paper by Dr. Philippi was then read> containing ** Descriptions 

 of a new species of Trochus, and of eighteen new species of Litiorina, 

 in the collection of H. Cuming, Esq." :— ^ 



Trochus Cumingii. TV. testd late conicd, umbilieatd, acutd, ear' 

 neo^cinered ; anfractibus convexiusculis, transverse striatis, et seri/s 

 triplici spinularum ornatis ; spinis supremis solidis compressis, 

 mediants fornicatis majoribus, infimis fornicatis confertissimis ; 

 aperturd suborbiculari, violaccscente ; margine umbilici acuto, pro- 

 minente. 



Altit. 8, diam. 8, altic. aperture? 4j lin. 



Hab. Guimaras, insula Philippinarum. 



This very interesting species was found on rocks at high water- 

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



1. LiTTORiNA LEMNiscATA. Lit. testdparvd, ovato-oblongd, nigrd, 

 striis transversis et lined triplici, elevatd, moniliformi sculptd ; 

 anfractibus planiusculis ; basi nodulosd; aperturd spiram non 

 (Bquante, nigrd, basi albo-fasciatd ; columelld depressd, basi sub- 

 effusd. 



Altit. 4|, diam. 3, altit. aperturae 2^ lin. 

 Hab. Cuba ? 



2. LiTTORiNA ASPERA. Lit. tcstd oblongd, acutd, crassd,fuscescentet 

 lineis nigricantibus longitudinalibus obliquis pictd, ad basin sub- 

 angulatd; anfractibus parum convexis, liris elevatis transversis 

 sculptis ; aperturd ovatd, fused, fasciis duabus albidis ; labro intfts 

 albido, fusco-punctato . 



Altit, 8, diam. 5^, altit. aperturse 4^ 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. zebra {P fiasianella pe- 

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

 by its sculpture, 



3. LiTTORiNA PicTA, Lit. tcstd parvd, ovatd, acutd, basi obscurb 

 angulatd, transversim striatd ; fascid ad partem superior em an- 



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

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

 satis compressd fere rectilined. 

 Altit. 4, diam. 3, altit. aperturee 2^ lin. 

 Hab. ad insulas Sandwich. 

 Var. /3. Anfractibus superne angulatis, parte mediand anfractdi uh 



timi albido-marmoratd. 

 This species has nearly the shape and size of L. Basteroti (Turbo 

 pctraus. Turbo carulescens, etc.), which I believe the true Turbo neri- 

 toides of Linnaeus, and the colouring of the interrupted variety of L. 

 ziczac. 



4. LiTTORiNA PORCATA. Lit. tcstd parvd, ovatd, obtusiusculd, um- 

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



JJH2 



