C E R I T H I U M. 



Plate V. 



Species 27. (Fig. a, ()^ Mus. Cuniing;.) 



Cekithium LEMNISCATUM. Ct'rith. testa pi/ramidata. 

 alliil, castaneo bifnsciatri, aiifractibits freqiientibus, tri- 

 seriatim acute tuberculatis, medio snbangiilatis tuber- 

 culls majoribus. aperturd brevinsculn, canali brevi, rec- 

 tiusculo, lahro iiicrussato, liitus crenidato. 



The decorated Cekithium. Shell pyiTunidal, white, 

 with two bauds of chestnut colour, whorls numerous, 

 with three rows of tubercles, rather angular in the 

 centre with larger tubercles, aperture rather short, 

 canal short, rather straight, outer lip thick, crenulated 

 within. 



QuoY, Voyage de I'AstroIabe, pi. 54. f. 10-18. 



Hab. St. Nicholas, Island of Zebu, Philippines ; Cuniing. 



This beautiful shell has a band of dark-chestnut colour 

 on the whorls, near the suture, and another showing only 

 a little above the suture and entirely on the last whorl. 

 It is sharply tuberculated m three rows. 



Species 28. (Mus. Cuming.) 



Cekithium nitidum. Cerith. testa subveiitricosd, fulvd, 

 tuberculis fuscis acuih m seriebus moniliformibus 

 tribus dispositis, armatd, inter tubercuJa striata, aper- 

 turd breciiisculd, subrotuiidd, canali mediocri, recwvo, 

 labro crasso, crenulato. 



The neat Cekithium. Shell rather ventricose, light 

 brown, armed with sharp small dark-brown tubercles, 

 placed in three necklace-like rows, striated between 

 the tubercles, aperture rather short, rounded, canal 

 of middle size, bent backwards, outer lip thick, cre- 

 nulated. 



SowERBY, Thes. Conch. Cerithium sp. 100. 



Hab. Island of Bohol, Philippines. 



There is a peculiar neatness in the sculpture of this spe- 

 cies. The sharply-defined rows of little tubercles are of a 

 darker colour than the groundwork on which they are 

 placed. 



Species 29. (Mus. Cuming.) 



Cekithium cokallinum. Cerith. testa pyramidatd, 

 elonguta, fusco-nigrescente, anfractibus numerosis, sub- 

 ventricosis, longitudinaliter plicatis, plicis solidis, ro- 

 tundis, spiraliter tricostatis, et inter striatis, suturd 



excavatd, aperturd ovali, pallide fulvd, labia interna 

 pastice calloso, labro crasso, intus crenulato. 



The coralline Cekithium. Shell tapering, long, 

 brown, tending to black, whorls numerous, rather 

 ventricose, longitudinally plicated (the plicae solid, 

 round), spirally crossed by three ribs and striated 

 between, suture excavated, aperture oval, pale-brown, 

 inner lip callous at the back, outer lip thick, crenu- 

 lated within. 



SowEKBY, Thes. Conch. Cerithium sp. 59. 



Hab. Island of Panay, Philippines ; Cuming. 



The whorls in this dark-brown species are characterized 

 by three thick spiral ribs crossing thick longituilinal plaits. 



Species 30. (Mus. Cuming.) 



Cekithium Novje-Hollandi.e. Cerith. testa turritd, 

 pyramidatd, elongatd, angustd, striatd, albd, anfracti- 

 bus numerosis, infra fusco variegatis, plicis longitudi- 

 naltbus, subjtexuosis, superne prope suturam tumidis 

 munitis, ultimo anfractu costis tribus tuberculatis 

 cincto, aperturd athd,ohli.iiud, canali brevi, subrecurvo, 

 labro subexpausa, iutus crenulato. 



The New Holland Cerithium. Shell turreted, pyra- 

 midal, elongated, narrow, striated, white, whorls nu- 

 merous, variegated with brown at the lower part, 

 provided with longitudinal rather tlexuous plaits, 

 which are rather tumid above near the suture, the 

 last whorl girt with three tuberculated ribs, aperture 

 white, oblique, canal short, bent a little backwards, 

 outer lip rather expanded, crenulated within. 



A. Adams, Sowerby's Thes. Conch. Cerithium sp. G3. 



Hab. New Holland. 



The upper part of the whorls is banded with white, and 

 the longitudinal plaits or ribs are swelled near the suture. 



Species 31. (Mus. Cuming.) 



Cerithium striatissimum. Cerith. testd subelongatd, 

 grisea-nigrescente, varicibns numerosis, albis, lyiinuti 

 spiraliter striatd, striis alternis noduliferis, anfracti- 

 bus subangulalis, nodulis ad angulum et ad suturam 

 paulo majoribus, aperturd subovali, postice contracid. 



October, 1865. 



