C E R 1 T H 1 U I\l . 



Plu-k VIII. 



Species 47. (Miis. Cuming.) 



Cekithium rusiFOK.viE. Cerith. testa eloiigato-turrild, 

 striata, longititdinaliter plicatn, albci, inter plica s cas- 

 taned, plicis tnhercnhiftris, anfradibus meclio angula- 

 tis, ultimo infra costis dna/ms moniliformihns cincto, 

 aperturd expansd, postici aiigiistald, canali dongnio, 

 (ingnstato, ohliqiio, labro expaiiso, acii/y hujiieato. 



The rusiroRji CEiirrniUM. Shell elongiitely tiirretcd, 

 striated, lotigitudiiuilly ]ilicated, white, between the 

 plaits chestnut-painted, plaits tuberculated, whorls 

 angular iu the middle, the last girt with two beaded 

 ribs below, aperture expanded, narrowed at the upper 

 part, canal long, narrow, oblique, outer lip expanded, 

 acutely fluted. 



SowEEBY, Thes. Conch. Cerithium sp. .53. 



Ilab. Philippines; Cu.i ing. 



This little shell is remarkable for the lengtii of its nar- 

 row canal and for the elegant sharp fluting of the expanded 

 outer lip. 



Species 4S. (Fig. a, b, Mus. Cuming.) 



Cerithium coronatdm. Cerith. testa oblongo-turritd, 

 miiiuta scabrd, aurautid, nvfrudibiis sculalis, siiperne 

 ad suluraiu atbis, t/imidis, tuberc/ilis puiicis magiiis 

 scabrosis coroiialis, iiifrci rectiuscidis, aperturd siib- 

 qiiadraln, e.rpa/isd, canali produdo, angusto, labro 

 varicij'uniii. 



The coronated Cerithium. Shell oblong-turreted, 

 minutely scabrous, orange-coloured, whorls in steps, 

 above at the suture white, swelled, and coronated 

 with few large scabrous tubercles, below rather 

 straight, aperture rather square, expanded, canal pro- 

 duced, narrow, outer lip in the form of a varix. 



SowERBY, Thes. Conch. Cerithium sp. '>! . 



Hob. Philippines ; Cuming. 



The white band and row of large tubc|-cles at the top 

 of each whorl in this species, gives it a peculiarity of ap- 

 pearance that distinguishes it from all others. 



nurnerosis, sid/angulaiia, aperturd ovnli, canali bred 

 aperto. 

 The slender Cerithium. Shell narrow and long, 

 minutely tuberculated in rows, white, variegated with 

 light fawn, varices large, irregular, whorls nuniero\is, 

 slightly angulated, aperture oval, canal short, open. 



SOWEKBY. 



Ilab. •? 



Much more elongated than C. ebiirneum (sp. 3.5), and 

 havintr much less annular whorls. 



Species 50. (Fig. a, b, Mus. Cuming.) 



Cerithium spathuliferum. Cerith. testa pyravi.idatd, 

 striatd, albidd, longiliidii/al'ter plicatd, anfradibus 

 rediiisciilis, medio et infra seriebus dnabns (nltimo 

 tribn-i) tnbereidvnnn. nrinatis, tnbercidis prodndis, 

 ptainddlis, aperturd obliipid, postici angiistatd, canali 

 produdu, angusto, hibrn subdigiluio. 



The spade Cerithium. Shell pyramidal, striated, 

 whitish, longitudinally plaited, whorls rather straight, 

 armed at the middle and below w^ilh two rows of 

 large produced flattened tubercles (three in the last 

 whorl), aperture oblique, narrowed behind, canal 

 produced, narrow, outer lip rather digitated. 



SowEKBY, Thes. Conch. Cerithiu sp. 31). 



Hab. ? 



The tubercles in this species are flattened into a spade- 

 like shape. 



Species V.i. (.Mus. Cuming.) 



Cerithium GRAciLirouME. Cerith. testa angustd, don- 

 gatd, minute seriatim taberculiferd, alba, fuloo va- 

 riegatu, varicibus inagnis, irregularibns, anfradibus 



Species 51. (Mus. Cuming.) 



Cerithium Guiniacum. Cerith. testa breviusculd, ven- 

 tricosd, leviter striatd, albd, epidermide fusco-virides- 

 centc, in fascitnn latum iudutd, anfradibus longitiidina- 

 liter jdicalis, plicis magnis, rotundis, supra ad suturas 

 tumidis, aperturd magud, canali bred, labro simpl'ci. 



The Guixea-coast ('euithium. Shell rather short. 

 ventricose, lightly striated, white, covered with a 

 greenish-brown epidermis in a broad band, whorls 

 longitudinally plicated, plaits large, rounded, tuiiiiil 

 at the upper part near the suture, aperture large, 

 canal short, outer lip simple. 



Philippi, Abbildungen, pi. 1, f. 13. 



Hab. Lord Hood's Island, coast of Guinea ; Cumim;-. 



October, 18GE 



