C E R I T H I U M . 



Plate IV. 



Species 20. (Mus. Cuming.) 



Ceritiiium MONtLlFERUM. Ccrlth. tedil solidii, snljovali, 

 hreviuaciild, versus opicciii. atlemtatd, grked, varicibus 

 alliis, atifractUjus paucis, bremitsculis, tuharmlis niyrii 

 ovatis elevalis In serlehus trihns ornatis, interstitik 

 striatk, iiperhird brevi, labro crasso cmiulnio, nanali 

 hrevi, colmnelld oblnsd. 



The beaded Cerithidm. Shell solid, rather short, 

 tending to oval, narrowing at the apex, grey, with 

 white varices, wiiorls few, rather sliort, oriianiented 

 with black, oval, raised tubercles in three rows, in- 

 terstices striated, aperture short, outer lip thick, cre- 

 nulated, canal short, cobuuella obtuse. 



KiENER, Spec. Conch, pi. IG. f. 3. 



Hab. Island of Panay, Philippines ; Cuming. 



Shorter and more oval in form than C. splendens. 



Species 21. (Fig. a, b, Mus. Cuming.) 



Ceeithium tuberculatum. Cerltli. testa salidii, bre- 

 viusciild, ovatd, versus apicem attenuatd, alba, nigro 

 variegatd, coslis atbis tuberculatk rugatk, aperturn 

 hreci, labro crasso crenulalo, colmnelld obtusd. 



The tuberculated Cekithium. Shell solid, rather 

 short, oval, tapering towards the apex, white, varie- 

 gated with black, roughened with white tuberculated 

 ribs, aperture short, outer lip thick, crenulated, colu- 

 mella obtuse. 



LiNN^us, Syst. Nat. n. 544. 



Ceritiiium carhoiiariim, Philippi. 



Hab. Island of Panay, Philippines. 



The tubercles are larger and closer than in C. monili- 

 ferum. 



Species 22. (^Mus. Cuming.) 



Ceiiituium alternatum. Cerith. testd siibventricosd, 

 aUernatim albo et fusco fasciatd, anfractibus suban- 

 gulatis, cosiis nodulosis acutis et interstitiis slriatis 

 fiiscis allernatis. aperturd ovali, cnnali brevi, recurvo. 



The alternated Cerithium. Shell ventricose, alter- 

 nately banded with while and brown, whorls rather 

 anguhir, alternated with sharp nodulous ribs and 

 striated interstices, aperture oval, canal short, re- 

 curved. 



Sowerby, Thes. Conch. Cerithium sp. 9S. 

 Ilab. Island of Ticao, Philippines ; Cuming. 



The white, sharply tuberculated ribs, alternating witli 

 brown striated interstices, give a very pretty appearance 

 to this species. 



Species 23. (Fig. a, b, Mus. Cuming.) 



Cerithium ocellatum. Cerith. testa pyrawidatd. ni- 

 grd, piuictis ulbis depressis in striis seidpld, anfracti- 

 bus rapide cresceutibus, angulatis, ad aiigulum acute 

 tuberculatis, ultimo anfractu subquadrato, magnu, 

 aperturd magnd, colmnelld bremssinid, postice callosd, 

 labro ctpanso, lirato. 



The eyed Cerithium. Shell pyramidal, black, striated 

 with rows of white punctures, whorls quickly in- 

 creasing, angular, acutely tuberculated at the angle, 

 last whoil rather square, large, a]jerture large, colu- 

 mella short, with a posterior callus, outer lip ex- 

 panded, lirated. 



Bruguiere, Enc. Meth. Cerith. 43. 



Ceritiiium irroratam et C. iuterruptum, Gould. 



Hah. Gulf of California. 



On minute examination, the spiral striae are found to be 

 sculptured with little white lined pits. 



Species 24. (Mus. Cuming.) 



Cerithium Trailli. Cerith. testd pyramidatd, ventri- 

 cosd, patlide fulvd grisesceute, varicibus albis, nudulis 

 parvis regularibus, nigrescenlibus in. seriebus cinctd, 

 anfractibus recfiusculis, gradatim cresceutibus, ultimo 

 rolundo, aperturd rotundd, canali brevi, labro rotundo. 

 expanso, crenulato. 



Traill's Cerithium. Shell pyramidal, ventricose, pale- 

 fulvous, tending to grey, with white varices, girt with 

 regular rows of blackish small tubercles, whorls ra- 

 ther straight, gradually increasing, the last ro\Mul. 

 aperture round, canal short, outer lip round, expamk'd. 

 crenidated. 



Sowerby, Thes. Conch. Cerithium sp. 93. 



Hab. Singapore ; Traill. 



Of a more legularly pyramidal form than C. monili- 

 feriim, and much more robust and ventricose than C. 

 splendens. 



October, 1865. 



