LITTORINA.— Plate II. 



The subnodose Littorina. Shell ovately conical, solid, 

 imperforated, grey, tessellated with purple-brown, 

 transversely three-ridged, ridges distant, finely no- 

 dded ; aperture rather small, purple-brown. 

 Philippi, Abbild. und Bescb. Couch, vol. ii. p. 19. pi. 3. 



f. 8 and 9. 

 Hab. Red Sea. 



A solid, rather tumid species, encircled with three ra- 

 ther distant, finely noduled ridges, tessellated with rich 

 purple-brown, and having the columella and interior deeply 

 stained with the same colour. 



Species 11. (Mus. Cuming.) 



Littorina MURICATA. Lilt, testa ovato-conicd, acuta, an- 

 ffuste excavato-umiilicatd, violascente-cinered, anfrac- 

 tibus rotundatis, ad mtiiram subimpressis, driatis, no- 

 dulls granularibits undique seriatim sculptis. 



TiiF. PRICKLY Littorina. Shell ovately conical, sharp, 

 narrowly excavately umbilicated, violet-ash, whorls 

 rounded, rather impressed at the suture, striated, en- 

 circled throughout with rows of granuled nodules. 



Turbo muricatus, Linnaeus, Syst. Nat. 12th edit. p. 1232. 

 Z« Boson, Adanson. 

 Littorina muricata, Deshayes. 



Hab. West Africa, Cuba, Honduras. 



In this- species the whorls are more rounded and the 



suture more impressed than in its congeners, and the 



i;ranulated sculpture is more defined. 



flab. New Zealand. 



Distinguished from the allied species by its more slen- 

 der, sharply pyramidal form. 



Species 12. (Mus. Cuming.) 



l>lTroRiNA viLls. Lilt, testa pyramidali-couied, acuta, im- 

 perforatd, transversitn elevato-striatd, virescenle-gr'ised, 

 anfractibus supenie plano-dedivibus, nodulis albidis 

 medio biseriatim cinctk, aperlitrd purpureo-fuscd. 



The WORTHLESS Littorina. Shell pyramidally conical, 

 shai-p, imperforated, transversely elevately striated, 

 greenish-grey, whorls flatly slanting round the upper 

 part, encircled round the middle with two rows of 

 white nodules, aperture purple-brown. 



-Menke, Philippi, Abbild. und Besch. Conch, vol. ii. p. 15. 

 pi. 2. f. 21, 



Species 13. (Mus. Cuming.) 



Littorina nodosa. Litt. testd obovatd, tumidiuseuld, im- 

 perforatd, spird brevi, acuta, anfractihus superne de- 

 clivibus, delude convexls, liris linearibm et nodulis te- 

 nuibus muricatis cingulatis, fusco-grised, rufo tinctd, 

 columella late excavatd, apertura fauce fused. 



The nodose Littorina. Shell broadly ovate, rather 

 swollen, imperforated, spire short, siiarp, whorls 

 slanting round the upper part, then convex, encircled 

 with linear ridges and fine prickly nodules, fuscous- 

 grey, stained with red, columella broadly excavated, 

 interior of aperture brown. 



Gray, Zoology of Beechey's Voyage, p. 139. 



Uab. North coast of Australia. 



A shortly conoid swollen species, with a somewhat Pur- 

 /i«rfl-like aspect, sculptured with fine granose nodules. 



14. (Mus. Cuming.) 



Littorina pyramidalis. Lilt, testd pyramidali-ovatd, 

 imperforatd, spird turritd, anfractibus superiw concavo- 

 decUvibus, deinde angulatis, et tuberculorum seriebus 

 dtcabus cotispicue cingulatis, purpureo-adustd, apertura 

 parvd, columella latissime excavatd, purpurasceiile, 

 basi subproductd. 



The pyramidal Littorina. Shell pyramidally ovale, 

 imperforated, spire turreted, whorls concavely slant- 

 ing at the upper part, then angled, and conspicuously 

 encircled with two rows of tubercles, purple-brown, 

 aperture small, columella very broadly excavated, 

 purplish, rather produced at the base. 



QuoY and Gaimard, Voy. de I'Astrolabe, vol. ii. pi. 33. 

 f. 12-15. 



Hah. New Zealand. 



.A rather abnorii 

 its cliaracters. 



form of the genus, quite peculiar in 



