CERITHIUM.— Plate XI. 



The bramble Cerithiu.m. Shell long, tapering, vari- 

 cose, purplish-brown, with numerous thick varices, 

 whorls numerous, spirally striated, longitutlinally 

 plaited, gii't with three (last whorl seven) ribs, tuber- 

 culated on the numerous plaits, aperture oval, canal 

 rather long and recurved, outer lip fluted. 

 Maktyn, Universal Conchology, pi. 28. 

 Miirex serratus. Wood. 



Httb. ? 



A stout, darkly-coloured shell, with sharp, narrow tu- 

 bercles in rows. 



Species 76. (Fig. a, b, Mus. Cuming.) 



Ceuituium eximium. Cerith. testa elongutd, eleganter 

 pyramidatd, medio subveulricosd, pallidisshm riifd, ad 

 canalem aurantid, longitudinaHter frequenter plicatd, 

 plicis areuatis, minute tuberculalis, anfractibus uiime- 

 rosis, suturd valide excavatd, aperturd siihquadratd, 

 canali longiusculo, labro cremdato. 



The choice Cerithium. Shell long, elegantly taper- 

 ing, a little swelled in the middle, very pale-brown, 

 tinged with orange on the canal, many-plaited longi- 

 tudinally, plaits curved, minutely tuberculated, whorls 

 numerous, suture deeply excavated, aperture rather 

 square, canal rather long, outer lip crenulated. 



SowERBY, TJies. Conch. Cerithium sp. 103. 

 Hab. Ceylon; Layard. 



This little species is beautifully formed and finely sculp- 

 tured, the e.Kcavated suture of the whorls showing their 

 shape. 



Species 77. (Mus. Cuming.) 



Cerithium lentiginosum. Cerith. testd parvd, albd, 

 macidis pimctisqne rubris varlegatd, pyramidatd, acu- 

 minatd, anfractibus valide angulatis, spiraliier striatis, 

 titter slrias moniliformibMS, ad angnlum acute tubercuta- 

 tis, aperturd parvd, canali brevi, aperto, labro subex- 

 panso, lineato. 



The freckled Cekithium. Shell small, white, varie- 

 gated with reddish spots and dots, tapering, acumi- 

 nated, whorls strongly angulated, spirally striated, 

 between the striae beaded, with sharp tubercles at the 

 angles, aperture rather square, canal rather produced, 

 outer lip crenulated. 



Sowerby. 



Uab. ? 



A small shell, nnnutely variegated with reddish-brown 

 markings, with strongly angulated whorls, otherwise 

 somewhat resembling C. eburneum. 



