C E R I T H I U M 



Plate III. 



Species 13. (Mus. Cuming-.) 



Cerithium uncinatum. Cerith. ttdd pyramidaUl, anit- 

 miuain, traiisversim striata, ad basin nodulis in serie- 

 bus duabiis ciiicld, alba, fiisco marmoratd el liiieis 

 pmictatis oriiatd, anfractibm angnlalis, medio lubi'r- 

 culis magnis atratis armatis, aperlitrd pared, labia 

 inlerno vix callosd, canali brevi, labro mibquadraio. 



The hooked Cerithium. Shell tnpeiiiig, acumiiuite, 

 spirally striated, girt below with two series of no- 

 dules, white, mottled with brown and ornamented 

 with punctured lines, whorls angular, armed with 

 large black-tipped tubercles, aperture smaU, inner lip 

 scarcely callous, canal short, outer lip rather square. 



Gmelin, Murex, u. 57. 



Ceritliinm famelicum, C. B. Adams. 



Hab. Guadaloupe. 



Species 14. (Tig. a, b, Mus. Cuming.) 



Cerithium akmatum. Cerilk. testd elongatd, acuminata, 

 palUde fulvd, macidis riifo->iigresceiitibi/s variegaUi, 

 anfractibus numerods, p/aiiis, nodulis magnis, panels, 

 extantibus prope suturam, el seriebiis tribiis papillarum 

 parvarum infra cincds, varicibiis ad anfractiim nlti- 

 mum uno magna, aliis panels parvis prope apicem dis- 

 positis, aperlurd subquadratd, columelld tenui, callo 

 pastico mediocri, labra crassa, aciileata, canali bre- 

 viuscido, pallia recurvo. 



The armed Cerithium. Shell elongate, acuminate, 

 pale yellowish-brown, variegated with blackish-red 

 spots, whorls numerous, flat, armed with few large 

 nodules near the sutiu-e and three series of small 

 papiUse beneath, varices one large on the last whorl 

 and a few others smaller near the apex, aperture ra- 

 ther square, colunieUa thin, with the posterior callus 

 moderate in size, outer lip thick, aculeated, canal ra- 

 ther short, a little recurved. 

 PniLiPPi, Abbild. pi. 1. f. 9. 

 Hab. Island of Ticao, Philippines ; Cuming. 



In this shell the whorls themselves are not angular, but 

 the row of large angular tubercles near the suture give them 

 the appearance of being so. 



Species 15. (Mus. Cuming.) 



Ceuithium umbonatum. Cerith. lestd pijramidutd, acu- 

 minata, rnbro-fiiscescenle minuti: interruptim lineald, 

 anfractibus medio subexcavatls, ad suturam tubercuUs 

 magnis distanllbus rotundis armatis, ultimo magna, 

 nudulorum seriebus tribus medio et infra ornata, aper- 

 tiira magna, labia interna incrassato, callo pastico ro- 

 timdo, canali prod ucto, recurvo, lahro expanso, incran- 

 salo, poslice sinuato. 

 The buckler Cerithium. Shell pyramidal, acumi- 

 nated, minutely striped with reddisii-brown inter- 

 rupted lines, whorls slightly excavated in the middle, 

 armed at the suture with large distant rounded tu- 

 bercles, the last large, with three series of nodules 

 in the centre and under, aperture large, inner lip 

 thick, with a rounded posterior callus, canal produced, 

 recin-ved, outer lip expanded, thickened, sinuated 

 posteriorly. 

 SowERBY, Thes. Conch, sp. 40. 

 Hab. Jamaica. 



Characterized by the expansion of the lower whorls and 

 aperture, and by the boss-like tubercles ranged in a pro- 

 minent row near the suture, and three smaller rows on the 

 lower parts of the whorls. 



Species 16. (Fig. a, b, Mus. Cuming.) 



Cerithium caudatum. Cerith. testd elongatd, varicosd, 

 irregulari, spiraliler striata, nigrescente, apice varici- 

 bus et aperlurd albidis, anfractibus angidatis, superne 

 subexcavalis, ad suturam et ad angulum tubercuUs 

 coronatis, infra nodulis parvis seriatim ornatis, aper- 

 lurd effusd, labia inlerno tenui, callo po-itico magno, 

 canali producto, recurvo, labro subexpauso, ad margi- 

 nem punctata, postice coarctato. 



The tailed Cerithium. Shell elongated, varicose, 

 irregular, spirally striated, rather black, with the apex 

 varices and aperture white, whorls angular, hollowed 

 above, crowned with rows of tubercles on the angle 

 and at the suture, and ornamented with three rows 

 of very small nodules beneath, aperture ett'use, inner 

 lip thin, with large posterior callus, canal long, re- 

 curved, outer lip rather expanded, spotted at tiie 

 edge, rather narrowed behind. 



October, 1865 



