C E R I T T 1 1 D E A . 



Plate III. 



Species 15. (Fig. a, b, Mus. Cuming.) 



('F.iUTiiiDEA FoRTUNEl. Cev. testd IcBvigatd, subventri- 

 cosn, SHbc(erided,fiiscofasciatd, vcl omnino fused ; aii- 

 fractibiis panels, rotiindis, longUiidlnaliter costatis, 

 costis siiiitaiis, snturd profunda, ultimo anfractii la- 

 vissimo, infra sulcata, labro vix inerassato, sinuato, 

 infra, produeto. 



Fortune's C'erithidea. Shell smooth, subvetitncose, 

 bluish, banded with brown, or all brown ; whorls 

 few, round, longitudinally ribbed, ribs sinuiited, su- 

 ture deep, last whorl very smooth, grooved beneath, 

 outer lip not much thickened, sinuous, produced be- 

 neath. 



Adams. 



CerilJdum Montagnei, var., Sowerby's Thesaurus. 



Hah. Shanghai. 



Much narrower than C. Montagnri, the ribs smoother, 

 and the aperture much less expanded. 



Species 16. (Fig. a, h, Mus. Hanley.) 



Ceritiiidea Hanleyana. Cer. testd parvd, alhd, tur- 

 ritd, solidd; aufraelibus novem, longitudinaliter cos- 

 tatis, sutnrd excavatd, costis numerosis biaiigulatis, 

 medio depressis, arcuatis, interstitiis medio foveolatis, 

 anfraetu ultimo infra unicarinato ; aperturd rotunda, 

 eolumelld brevi, rec.td, eanali inconspicuo, labro crasso, 

 rotundo, sinuato, infra medium producto. 



Hanley's Ceritoidea. Shell small, white, turreted, 

 solid; whorls nine, longitudinally ribbed, suture ex- 

 cavated, ribs numerous, biangulated, depressed in the 

 middle, arched, interstices with a pit in the middle, 

 last whorl with a keel at the lower part ; aperture 

 round, columella short, straight, canal inconspicuous, 

 outer lip thick, round, sinuous, produced below the 

 middle. 



SOWERBY. 

 Hab. ? 



A very curious little white shell, which appears to be- 

 long to this group, although the operculum is not known. 



Species 17. (Mus. Cuming.) 

 Cerithidea Sinensis. Cer. testd laoi, tenui, pyrami 



dali, elongatd, subglaued, snperne ad snluram fascia 

 albd, supra medium el infra lineis rubris dnabus cincld ; 

 anfractihus longiludinaHter costatis, .sulurd nniliratd, 

 ultimo anfraetu infra subangnlaid, ad angulum. ob- 

 scure unicarinato, costis vix arcuatis, l/soibus ; aper- 

 turd subquadratd, labro tenui, infra producto, eanali 

 inconspicuo. 



The Chinese Cerithidea. Shell smooth, thin, pyra- 

 midal, elongate, subglaucous, spirally girt witli a 

 white band above at the suture, and with two red 

 lines above and beneath; whorls longitudinally riljbed, 

 suture wnth a single ridge, last whorl slightly angular 

 beneath, and with a single obscure keel at the angle, 

 ribs slightly arched, smooth ; aperture rather square, 

 outer lip thin, produced lieneath, canal inconspicuous. 



Philippi, Abbildungen, t. 1. 



Hab. China. 



A narrower shell than G. corneum, more neatly banded. 

 and of a less horny structure. 



Species 18. (Mus. Cuming.) 



Cerithidea Morchii. Cer. testd subpyramidaU, tenui, 

 subcaruled, rubra spiraliter txniatd, sulcatd, longitu- 

 dinaliter costatd, costis crassis, subarcuutis, nodiferis, 

 interstitiis subplanulatis ; anfractihus brevibus, subro- 

 tundis, ad marginem crenulatis ; aperturd parvd, intus 

 fused, labro tenui paula expanso, sinuato. 



Mohch's Cerithidea. Siiell subpyi-amidal, thin, bluish, 

 spirally ribboned with red. grooved, longitudinally 

 ribbed, ribs thick, slightly arched, nodiferous, inter- 

 stices rather flat ; whorls short, rathei- round, crenu- 

 lated at the margin; aperture small, brown within, 

 outer lip thin, a little expanded, sinuous. 



A. Adams. 



Hab. Island of Mindanao, Philippines. 



A narrow shell, with shorter and more rounded whorls 

 than C. r¥i:oporarum, and having fewer nodules on the 

 ribs. 



Species 19. (Fig. a, b, Mus. Cuming.) 



Cerithidea varicosa. Cer. testd solidd, pyramidatd, 

 fused, albo taniatd, liris spiralibus moniliferis, subdis- 

 tantibus, et costis subarcuutis, validis, eancellald ; an- 



May, 1866. 



