LITTORIN A. 



Plate XIII. 



Species 63. (Mus. Cuming.) 

 LiTTORiNA LUCTUOSA. Litt. testd acuminato-ovatd, im- 

 perforatd, anfractihm decUvi-cotwexis, hngitudinali- 

 ter plicato-driath, infenie spiraliter sulcatis ; livido- 

 fmcd; aperturd parviuscicld, columella ptirpuroicente. 

 The sad Littorina. Shell acumiiinlely ovate, imper- 

 forated, wliorls slantingly convex, longitudinally pli- 

 cately striated, spirally grooved towards the lower 

 part; livid-brown; aperture rather small, columella 

 piu'plish. 

 Hab. New Zealand. 



A rather light acuminated species, of a bluish livid- 

 brown colour, cliestnut in the aperture. 



Species 6G. (Fig. a, 6, Mus. Cuming.) 



LiTTORiNA punctata. ZM. testd ovato-veniricosd, spird 

 breviuscidd, acuta, anfractibtts convexis, regttlariter 

 Uneari-siilcatis ; olivaceo-fuscd, punctk albis quadra- 

 its midiqiie tessellatd ; aperturd subpaiuld, columelld 

 late appressd. 



The dotted Littokina. Shell ovately ventricose, spire 

 rather short, sharp, whorls convex, regularly linearly 

 grooved ; olive-brown, tessellated throughout with 

 square white dots ; aperture rather open, columella 

 broadly appressed. 



Turbo punctata, Gmelin, Syst. Nat. p. 3597. 

 Le Marnat, Adanson. 



Hub. Senegal. 



Mostly of ventricose growth, thickly tessellated with 



small square white dots upon a dark-olive ground. 



Species 67. (Fig. a, b, c, d, Mus. Cuming.) 

 LiTTORiNA UNDfLATA. Litt. tcstd ovato-conoided, imper- 

 foratd, soUdimculd, anfractibus superne subconcavo- 

 mpressis, deinde convexis, nunc lievibiis, nunc suleatis 

 et liratis; lutescente-albd, rufo-fusco seepe faseiatd 

 aut Jlammatd ; aperturd mbcontractd, columelld cal- 

 loso-appremd, intense violacea. 

 The waved Littorina. Shell ovately conoid, imper- 

 forated, rather solid, whorls slightly eoncavely im- 



round the upper part, then convex, some- 

 times smooth, sometimes grooved and ridged ; yel- 

 lowish white, frequently banded or flamed with red- 

 brown ; aperture rather contracted, columella cal- 

 lously appressed, deep violet. 

 Gray, iiool. Beechey's Voyage, p. 140. 

 Hab. Society and Philippine Islands. 



This is the most variable of all Littorina. Some spe- 

 cimens are smooth and marbled with chestnut-brown, 

 others pale and spirally ridge-striated ; but all are charac- 

 terized by a deep-violet enamelled columella. 



Species 68. (Fig. a, b, Mus. Cuming.) 

 Littorina granularis. Litt. testd ovato-ventricosd, 

 spird pared, acutd, anfractibus convexis, dense irregu- 

 lariter granoso-liratis ; fulvd, cceruleo tinctd; coln- 

 >nelld late excavatd et dilatatd, carneo-fuscescente. 

 The grained Littorina. Shell ovately ventricose, 

 spire small, sharp, whorls convex, closely irregularly 

 granosely ridged ; fulvous, tinged with blue ; colu- 

 mella broadly excavated and dilated, flesh-brown. 

 Gray, Zool. Beechey's Voyage, p. 140. 



Hab. ? 



The grained ridges are on the middle and upper por- 

 tion of the whorls; on the lower part the ridges are 

 smooth, and more numerous and close-set. 



Species 69. (Mus. Cuming.) 

 Littorina ARCTICA. Litt. testd subglobosd, spird breti- 



usculd, anfractibus rotundatis, plus minus erosis ; 



sordide fused; aperturd subcirculari, columella sub- 



callosd. 

 The ARCTIC Littorina. Shell subglobose, spire rather 



short, obtuse, whorls rounded, more or less eroded ; 



dirty-brown; aperture nearly circular, columella 



somewhat callous. 

 MbiiLER, Fauna Gronlandica, p. 9. 

 Hab. Kamtschatka, Nova Zembla. 



A globose, rather light inflated species, of a dingy hue, 

 generally more or less eroded. 



June, 1857. 



