LITTORINA. 



Plate XVIII. 



Species 101. (Mus. Brit.) 

 LiTToniN.\ TNTERMEDLi. Litt. t.est/i ohlongo-cordcd, hasi 



ventricosd, ternd, colore vurid, lineis impresm exaratd; 



apird acutd, an/raciiiua convexiuscidis, ultimo rotun- 



dato ; columelld attd vel violaced. 

 The intermediate Littorina. Shell oblong, conical, 



ventrieose at the base, thin, various in colour, grooved 



with impressed lines , spire sharp, whorls convex, the 



last rounded ; columella white or violet. 

 PuiLiPPi, Pro. Zool. Soc. 1845, p. 141. 

 Ilab. Eed Sea, Natal, New Holland, Philippine Islands, 



Tahiti. 

 Closely allied to L. scabra, of which there are man}' forms 

 not always readily definable. 



Species 102. (Mus. Brit.) 

 LiTTOEiXA Natalensis. Lilt, testdparvd, omto-conicd^ 



acutd, cinered, tratisversim striata, tuherculato-twdosd ; 



apertiird ovali, columelld nigra, planimculd, infeme 



productd et dilatatd. 

 The Natal Littorina. Shell small, ovately conical, 



sharp, ash-coloured, transversely striated and tubercu- 



larly nodose ; aperture oval, columella black, rather 



flat, produced and dilated at the lower part. 

 Krauss, Philippi, Abbild. und Besch. Couch, vol. ii. 



p. 100. pi. 3. f. 4. 

 Ilab. Natal. 



A small, solid species, belonging to that characteristic 

 group of the genus represented most conspicuously by 

 L. dilatata. 



Fig. 103. (Mus. Brit.) 



Having figured a transversely banded example of Litto- 

 rina fasciata. Gray, at Plate IV. fig. 20, which is not very 

 typical of its general character, a specimen is here repre- 

 seuted with longitudinally waved bands. 



Species 104. (Mus. Brit.) 

 Littorina glabeata. Litt. testd ovato-oblongd, acidd, 

 albido-carned, strigis pallide fuscis obliquis pictd ; an- 

 fractibtis parnm convexis, laviius, ultimo basi angu- 

 lato ; apertiird ovatd, ri'feseeiUe, columelld depressd, 

 violaced. 



The smooth Littorina." Shell ovately oblong, sharp, 

 whitish-flesh-colour, painted with oblique pale-brown 

 streaks ; whorls but little convex, smooth, the last 

 angled ; aperture ovate, reddish, columella depressed, 

 violet. 



Philippi, Pro. Zool. Soc. 1845, p. 140. 



Hob. Payta, Peru ; Cuming. 



Of a rather solid narrowly conical form, smooth, painted 

 in a characteristic manner with oblique brown hair-streaks. 



Species 105. (Mus. Cuming.) 

 Littorina trochoides. Litt. testd ehngato-conicd, 

 subpyramidali, sordide grised ; anfractibus convexis, 

 valide tubercidato-nodosis, ad snturam impressis; 

 aperturd parvd, subcjuadrato-orbicidari, columelld 

 CTcavafo-depressd, idgrescente. 

 The trochoid Littorina. Shell elongately conical, 

 somewhat pyramidal, dull grey ; whorls convex, 

 strongly tubercularly nodose, impressed at the 

 suture ; aperture small, somewhat squarely orbicular, 

 columella excavately depressed, blackish. 

 Gray, Zoology of Beechey's Voyage, p. 140. 



ffai. ? ' 



Cliiefly distinguished from its congeners by a more con- 

 tracted and pyramidal growth. 



Species 106. (Mus. Cuming.) 

 Littorina granosa. Litt. testd ovato-ventricosd, crassd, 



granoso-tuberculatd, sordide grised; aperturd parvd, 



columelld arcuato-depressd, subcallosd. 

 The grained Littorina. Shell ovately ventrieose, 



thick, granosely tubercled, dull grey ; aperture small, 



columella arcuately depressed, rather callous. 

 Philippi, Abbild. und Besch. Conch, vol. iii. p. 65. pi. 7. 



f 14. 

 Hab. Guinea, Liberia. 



The growth of this species is quite the opposite to the 

 preceding, being broad and obese though belonging to 

 the same type. 



Species 107. (Mus. Brit.) 

 Littorina modesta. Litt. testd ovato-oblongd, albidd. 



October, 1858. 



