Zoological Society. 445 



Altit. 9, diam. 6^, altit. aperturae 5 lin. 

 Hab. ad Floridam (communicated by Say). 



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

 ajjerture not narrowed, nor the outer lip mottled within. 



10. LiTTORiNA MODESTA. Lit. testd ovato-ohlougd, acutd, tenuiuS' 

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

 sulcatd; anfractibus convexiusculis, suturd profundd divisis, ul- 

 timo hand carinato ; aperturd semiorbiculari, luted velfusco infu- 

 matd ; columella fere rectilined, dilatatd, depressd, infuscatd ; 

 anfractu ultimo ad columellam eroso. 



Altit. 8, diam. 6, altit. aperturae 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 X. Sayi. 



11. LiTTORiNA INTERMEDIA. Lit. testd oblongo-coTiicd, basi veniri- 

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

 timo exaratd, lavi; anfractibus convexis, ultimo rotundato haud 

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

 ratd. 



Altit. 10, diam. 7|-, altit. aperturae 5|- lin. et minor. 



Hab. Mare Rubrum, ad aram Natal ; 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, which is easily known by its very 

 numerous impressed spiral 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 basal 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 inter stitiis 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. testd tenuissimdy oblongd, exacts 

 conicd, basi carinatd, confertim et obsolete transversim striatd, 

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

 lumelld basi rectd, excavatd. 



Altit. 10, diam. 7^, altit. aperturae 6 lin. 

 Hab. Insula Java. 



13. LiTTORiNA TENUIS. Lit. tcstd ovato-oblongd, acutd, tenuissimd, 

 tenuissime transversim striatd, carneo-albidd, lineis angulatis rufis 



