141 



Very nearly allied to L. irrorata, but thinner, more slender, the 

 aperture not narrowed, nor the outer lip mottled \vithin. 



10. LiTTORiNA MODESTA. Lit. testd ovūto-oblongd, acutd, tenuius- 

 culd, albidd, aut obsolete rufo-punctatd, profunde transversim 

 sulcatd; anfractibus convexiusculis, suturd profundd divisis, ul- 

 timo haud carinato ; aperturd semiorbiculari, luted velfusco infu- 

 matd ; columelld f ere rectilined, dilatatd, depressd, infuscatd ; 

 anfractu ultimo ad columellam eroso. 



Altit. 8, diam. 6, altit. aperturse 5 lin. 



Hab. ad Sitka, Nova Albion (on rocks, half-tide), Mr. Barclay ; 

 ad insulam Mauritii, Capt. Caldwell. 



This species has the sculpture of L. aspera, the shape and colour 

 of L. Sayi. 



11. LiTTORiNA iNTERMEDiA. Lit. testd oblongo-cotiicd, basi ventri- 

 cosd, tenui, varii coloris, lineis impressis circa 8 in anfractu penul- 

 timo exaratd, l<evi; anfractibus convexis, ultimo rotundato haud 

 carinato ; aperturd ovatd ; columelld albd vel violaced, foved exa- 

 ratd. 



Altit. 10, diam. 7^, altit. aperturse 5į lin. et minor. 



Hab. Mare Rubrum, ad oram Natai ; Swan Point, in Nova Hol- 

 landia boreali ; Jimamailan, in insula Negrorum ; Tahiti ; insula Eli- 

 sabeth in Oceano Pacifico (Cuming). 



This species is intermediate between L. scabra (Helix scabra, L. 

 not auct.) and L. angulifera, Lamk., not Quoy and Gaim. ; it has the 

 shape and colouring of the latter, vphich is easily known by its very 

 numerous impressed spirai lines. With L. scabra it agrees in the 

 number of the impressed lines, but difFers by its smoothness to feel- 

 ing and by the absence of the basai keel. This latter character di- 

 stinguishes it from L. luteola, Q. et G., a species which, however, I 

 have not seen in nature. It is very variable in colouring, and we 

 may distinguish principally the following varieties ; — 



1 . punctata, testd lutescente aut rufescente, lineis transversis fuscis 

 irregulariter interruptis punctatd. 



2. articulata, testd interstitiis sulcorum regulariter albido et fusco 

 articulatis. (From Swan Point ; only 6 lin. high.) 



3. strigata, testd in fundo flavescente strigis latis, irregularibus ni- 

 gris ornatd. (From Jimamailan ; only 6 lin. high.) 



12. LiTTORiNA coNicA. Lit. tcstd tcnuissimd, oblongd, exacti 

 conicd, basi carinatd, confertim et obsolete transversim striatd, 

 albidd, unicolore velfusco pictd ; aperturd ovatd, perobliqud ; co- 

 lumelld basi rectd, excavatd. 



Altit. 10, diam. 7į, altit. aperturse 6 lin. 

 Hab. Insula Java. 



13. LiTTORiNA TENUis. Lit. tcstd ovūto-oUongd, acutd. tenuissimd, 

 tenuissime transversim striatd, carneo-albidd, lineis angiilatis )-iiJis 

 pallidissimis pictd ; suturd seepius infuscatd ; atfractibus planius- 



