C ERIT H lU M. 



Plate XIII. 



Species 85. (Fi"-, n, b, Mus. Cuming.) 



Cerithium lacteum. Cerith. tesld aiiijiida, siibcijliudra- 

 ced, elongata, Icevinscuhl, spiralUer sulcata, alba, pivpe 

 sidurum crenulafd, votiminquam inter creiiidas rubra 

 macidato, aperlnrd rotunda, parvd, columella brevi, 

 canali brevissivio, aperto, labro simplice. 



The milk-white Ceeitiuum. Shell narrow, subcylin- 

 clrical, elongated, rather smooth, spirally grooved, 

 white, crenulated near the suture, sometimes spotted 

 with red between the crennlations, aperture round, 

 small, columella short, canal very short, open, outer 

 lip simple. 



KiENER, Sp. Coneh. pi. 7. f. 3. 



ffab. Island of Ticao, Philippines ; Cuming. 



This narrow, cylindrical, white shell is slightly crenu- 

 ated below the suture of each whorl. 



Species 80. (Fig. a, b, Mus. Cuming.) 



Cerithium Bermud.e. Cerith. testa parvd, bmi, alba, 

 macidis irregidaribus castaneis variegatu, tuherculis 

 parois albis rotniidis seriatim cinctd, aperlurd ovali, 

 subexpansd, canali brevi, aperto. 



The Bermuda Cerithium. Shell small, short, white, 

 variegated with irregular chestnut spots and patches, 

 girt with small white round tubercles in rows, aper- 

 ture oval, rather expanded, canal short, open. 



SOWERBY. 



TIab. Bermuda. 



A very curiously variegated little shell, with regularly 

 placed tubercles. 



Species 87. (Mus. Cuming.) 



Cekithium sordidulum. Cerith. testd pi/ramidatd, 

 elongata, acuminatd, spiroliter striata, anfractibnsfre- 

 quentibus, subventricosis, distanter plicatis, spiraliter 

 tricoslatis, costis ad plicas acute tuberculatis, snturd 

 excavatd, anfractu ultimo infra rotundato, aperlurd 

 ovali, columelld redd, canali breviusculo, aperto. 



The SORDID Cerithium. Shell tapering, elongated, 

 acuminated, spirally striated, whorls numerous, ra- 

 ther ventricose, distantly plicated, spirally three- 

 ribbed, ribs sharply tuberculated at the plaits, suture 



excavated, the last whorl rounded below, aperture 

 oval, columella straight, canal rather short, open. 



Gould, Otia Conchologica, p. fil. 



Hab. ? 



The plaits in this while sliell are very sharply tulier- 

 cuated. 



Species 88. (Mus. Cuming.) 



Cerithium turritum. Cerith. testa pijramidatd, elon- 

 gatd, acuminatd, spiraliter striata, anfractibus brevi- 

 bus, rectiuscttlis, distanter plicatis, spiraliter tricosla- 

 tis, costis ad plicas obtusii tuberculatis, snturd exca- 

 vatd, ultimo subquadrato, infra spiraliter costd moni- 

 liferd cincto, aperlurd snbiiuadrald, columelld redd, 

 canali pruducto, labro sube.rpaiiso. 



The tukreted Cerithium. Shell tapering, elongated 

 acuminated, spirally striated, whorls short, rather 

 straight, dishintly plaited, spirally three-ribbed, ribs 

 obtusely tuberculated on the plaits, suture excavated, 

 the last rather square, girt below with a beaded rib, 

 aperture rather square, columella straight, canal pro- 

 duced, outer lip expanded. 



Sowerby, Thes. Conch. Cerithium sj). ■i7. 



Hab. Island of Bureas, Philippines ; Cuming. 



Species 89. (Mus. Cuming.) 



Cerithium Adenense. Cerith. testd elongata, angnstd, 

 albd, sparsim rubro picld, anfractibus subventricosis, 

 longitudinaliter distanter plicatis, ad suluramtmnidis, 

 tuberculatis, turn excavatis, medio et infra bicostatis, 

 interstitiis foveolatis, costis ad plicas acute tubercula- 

 tis, aperlurd parvd, ovali, cauali prodiidu. 



The Aden Cerithium. Shell elongated, narrow, white, 

 painted sparingly with reddish-brown, wliorls rather 

 ventricose, longitudinally distantly plaited, tumid 

 and tuberculated at the suture, then excavated, girt 

 with two ribs at and below the middle, ribs sharply 

 tuberculated at the plaits, aperture small, oval, canal 

 produced. 



Sowerby. 



Hab. Aden. 



r 



October, 1865. 



