L I T T R I N A. 



Plate IX. 



Species 41. (Mus. Cuming.) 



LiTTOKiNA OBESA. Lilt, testd ovato-conoided, solidd, 

 subobesd, anfractibus declivi-convexis, tenuisdme spi- 

 raliter lineari-sulcatis, inferne obtuse angulatis; roseo- 

 spadtced; aperturd suhconlractd, fauce auraniid, colti- 

 ■melld colloid, violaeed. 



The stout Littorina. Shell ovately conoid, solid, ra- 

 ther stout, whorls slantingly convex, vei-y finely spi- 

 rally linearly grooved, obtusely angled at the lower 

 part ; pinkish fawn-colour ; aperture rather con- 

 tracted, orange in the interior, columella callous, 

 violet. 



Sowerby, Genera of Shells, f. 6. 



Hab. Society and Philippine Islands. 



A smooth, stout species, of solid gi-owth, flesh-tinged 

 without, orange within, having the spiral linear grooves 

 rather distant. 



Species 42. (Kg. a, b, JIus. Cuming.) 



LiTTOBiNA Fortunei. Litt. testa su/jelonz/ato-turbmatd, 

 angustd, tenuiculd, anfractibus convexis, icndique spi- 

 ralitcr lineari-sulcatis ; pallide spadiced, rufo-fmco 

 oblique striyatd ; aperturd parvd, circulari, columelld 

 temie reflexd. 



Fortune's Littorina. Shell somewhat elongately tur- 

 binated, naiTow, rather thin, whorls convex, spii-ally 

 linearly grooved throughout ; light fawn-colour, ob- 

 liquely streaked with red-brown ; aperture small, cir- 

 cular, columella thinly reflected. 



Hah. China. 



A slender acuminated shell, with a small aperture, hav- 

 ing more the appearance of a Turritella than a Littorina. 



Species 43. (Mus. Cuming.) 

 Littorina pallescens. Litt. testd ovato-turbinatd, 

 spird acuta, anfraclibm rotundatis, spiraliter filoso- 

 costath, ad suturam itupresnis ; ojmco-albd ; aperturd 

 subcirculari, labro expanse, alio. 

 The pale Littorina. Shell ovately turbinated, spire 

 sharp, whorls rounded, spirally thread-ribbed, im- 

 pressed at the suture ; opake-white ; aperture nearly 

 circular, lip expanded, white. 



June, 



Philippi, Pro. Zool. Soc. 1845, p. 142. 

 Hab. Cagayan, Island of Mindanao, Philippines ; Cuming. 

 An opake-white shell, of solid, elegantly convoluted 

 growth, encircled throughout with strongly defined thread- 

 like keels. 



Species 44. (Fig. a, h, Mus. Cuming.) 



Littorina albicans. Litt. testd acuminato-ovatd, ieuui, 

 seniipellucidd, spird acutd, anfractibus rotundatis, spi- 

 raliter lineari-sulcatis, ad suturam obtuse carinafis, 

 ultimo plicato-varicoso ; calcareo-albd, versus apicem- 

 Uvido-purpurascente, ad earinam rufo-fusco vittatd ; 

 aperturd subcirculari, labro tenue reflexo. 



The whitish Littorina. Shell acuminately ovate, 

 thin, semi-transparent, spire sharp, whorls rounded, 

 spirally linearly grooved, obtusely keeled at the su- 

 ture, last whorl plieately varicose ; chalk-white, livid- 

 purple towards the apex, filleted with red-brown at 

 the keel; aperture nearly circular, lip thinly re- 

 flected. 



Metcalfe, Pro. Zool. Soc. 1852. 



Hab. Sarawak, Borneo ; Sir James Brooke. 



A peculiarly delicate semi-transparent chalk-white shell, 

 irregularly varicose on the last whorl after the manner of 



Species 45. (Fig. a, h, Mus. Cuming.) 



Littorina melanostoma. Litt. testd pyramidali-ob- 

 loiujd, solidiusculd, spird acutd, anfractibus plano-de- 

 clivibns, obliqm rude striatis, spiraliter lineari-sulca- 

 tis ; stramined, purpureo-fiisco interdum oblique stri- 

 (jatd ; aperturd trifjono-ovatd, basi expansd, cohnielld 

 callosd, intense nigricante-violaced. 



The black-mouth Littorina. Shell pyramidally ob- 

 long, rather solid, spire sharp, whorls flatly slanting, 

 obliquely roughly striated, spirally linearly grooved ; 

 straw-colour, sometimes obliquely streaked with pur- 

 ple-brown ; aperture triangularly ovate, expanded at 

 the base, columella callous, deep blackish-violet. 



Gr.vy, Zoology of Beechey's Voyage, p. 140. 



Hab. Singapore and Porneo. 



An interesting species, distinguished from all otliers of 

 857. 



