LITTORINA. 



Plate V. 



Species 21. (Fig. a, b, Mus. Cuming.) 



LiTTORiNA scABRA. LM. testd acuminalo-ovaU'i, tenui- 

 culd, aiifraclibus declivi-convexis, spiraliter dense lira- 

 lis, stria elevatd s/epe inter liras decurrente, infertie 

 obsolete tinicarinatis ; lutescente aut rosed, nunc ob- 

 lique fiisco strigatd et pnnctatd, nunc immacwlatd ; 

 aperiurd sidicontractd, columella excavato-appressd. 



The scabrous Littorina. Shell acuminately ovate, 

 rather tiiin, whorls slantingly convex, spirally densely 

 ridged, with a raised stria often running between the 

 ridges, obsoletely keeled towards the lower part; 

 yellowish or rose, sometimes obliquely streaked and 

 dotted with brown, sometimes unspotted ; aperture 

 rather contracted, columella excavately appressed. 



Helix scabra, Linnseus, Syst. Nat. p. 1243. 

 Phasianella aiiffulifera, Lamarck. 

 Littorina scabra, Philippi. 



Hab. Philippine Islands ; Cuming. 



Mostly characterized by a painting of oblique inter- 

 rupted dark-brown streaks, though it has varieties of 

 yellow or rose-colour entirely without marking. 



Species 22. (Fig. a, b, Mus. Cuming.) 

 Littorina Philippiana. Litt. testd acvmiuato-ovatd, 

 lenui, anfractibus declivi-convexis, spiraliter regulari- 

 ter filoso-liraiis, interstitiis oblique longitudinaliter 

 striatis, in/erne obsolete carinatis ; purpuraacente-spa- 

 diced, obsctire punctata, versus apicem nfd; aperturd 

 subcontructd, columella appressd, purpurascentc. 

 Philippi's Littorina. Shell acuminately ovate, thin, 

 whorls slantingly convex, spirally regularly thread- 

 ridged, interstices obliquely longitudinally striated, 

 obsoletely keeled at the lower part; purple-fawu, 

 obscurely dotted, red towards the apex ; aperture 

 rather contracted, columella appressed, purplish. 

 Hab. Philippine Islands ; Cuming. 



This species very closely resembles the L. Sieboldii, 

 which immediately foUows, but the spiral ridges are of a 



finer thread-like character, and there : 

 in the substance of the shell. 



more transparency 



Species 23. (Fig. a, b, Mus. Cuming.) 

 Littorina Sieboldii. Litt. testd acumiuato-ovatd, te- 

 nuiculd, anfractibus declivi-convexis, spiraliter eari- 

 nato-liratis, strid elevatd inter liras decurrente; lu- 

 tescente-spadiced, obscure punctatd ; aperturd subcon- 

 tractd, columelld excavato-appressd. 

 Siebold's Littorina. Shell acuminately ovate, rather 

 thin, whorls slantingly convex, spirally keel-ridged, 

 with a raised stria running between the ridges; yel- 

 lowish-fawn, obscurely dotted ; aperture rather con- 

 tracted, columella excavately appressed. 

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



Besch. Conch, pi. 6. f. 3. 

 Hab. Japan. 



A fine acuminated species, of rather solid growth, spi- 

 rally keel-ridged throughout with great regularity. 



Species 24. (Fig. a, b, c, Mus. Cuming.) 



Littokina pilosa. Litt. testd acuminato-otatd, tenui, 

 subventricosd, anfractibus convexis, spiraliter JUoso- 

 liratis, liris regularibiis, subdistantibus, strid elevatd 

 inter liras raro decurrente ; cinereo-grised aut rosed, 

 fitsco sape promiscuii punctatd ; aperturd subrotundatd, 

 columelld teiiue contortd. 



The thread-bound Littokina. Shell acuminately 

 ovate, thin, somewhat ventricose, whorls convex, spi- 

 rally thread-ridged, ridges regular, rather distant, 

 with rarely a raised stria running between the ridges ; 

 ash-grey or rose, often promiscuously dotted with 

 brown ; aperture nearly round, columella thinly 

 twisted. 



SowERBY, Genera of Shells, Littorina, f. 5. 



Hab. Island of Zebu, Philippine Islands (on the rocks at 

 half-tide) ; Cuming. 

 Of light substance, with the thread-like ridges more 



than usually distant, while the cohiuiella is peculiar in 



beins: thiulv contorted. 



May, 1S57. 



