CHONDEOPOMA.— Plate X. 



banded with violet-ash, whorls flatly convex, longi- 

 tudinally conspicuously lamellated, denticulated in 

 the sutures ; aperture circular, lip expaudedly fim- 

 briated, frill rayed with purple. 



CydoUoma lutjahre, Pfeiffer, Pro. Zool. Soc. 1851, p. 249. 

 Cistula luyubris, Pfeiffer. 



Hub. Jamaica. 



The longitudinal lamellae are rather more than usually 

 conspicuous in this species, which is especially distin- 

 guished by its violet-ash-banded colouring. 



Species 77. (Mus. Cuming.) 



Chondkopoma pallidum. Chond. testa niodice umhili- 

 catd, conico-turritd, sordide slrai)dned, suhliyalina, 

 pallide fitsco sjiarsim puiictatd, aiifraciibus convexis, 

 lotiffitiidinaliier minutissime dense lamellatd ; aperturd 

 circulari, labro siiblatefmbriato. 



The pale Chondropoma. Shell moderately umbili- 

 cated, conically turreted, duU straw-colour, sub- 

 hyaline, sparsely dotted with pale-brown, whorls con- 

 vex, longitudinally very minutely closely lamellated ; 

 aperture circular, lip rather broadly fringed. 



Cyclostoma pallidum, Pfeiffer, Pro. Zool. Soc. 1851, 

 p. 348. 

 Cidula pallida, Pfeiffer. 



Hab. Havana. 



Of the conically turreted type, with the longitudinal 

 lamellar sculpture extremely finely developed. 



Species 78. (Mus. Cuming.) 



Chondropoma Shepardianum. Cliond. testa angustl' 

 turriid, rubello-luted, fasco pimctaio-striijald, atifrac- 

 tibus 1-otundatis, longUudinaliter conspicue lamellatis, 

 in suiuris deiiticulatis, unfraetu ultimo subsuluto ; 

 apei'tnrd circulari, labro subfnnbriuto. 



Shepard's Chondropoma. Shell narrowly tuiTeted, 

 reddish yellow, dot-streaked with brown, whoiis 

 rounded, longitudinally conspicuously lamellated, 

 denticulated in the sutures, last whorl slightly un- 

 coiled ; aperture cu'cidar, lip a little fimbriated. 



Cyclostoma Shepardiuna, C. B. Adams, Contr. Conch, 

 no. 6. p. 92. 

 Cistula Shepardiana, Pfeiffer. 



Hab. Jamaica. 



The longitudinal lamellar sculpture strongly predomi- 

 nates ; the last whorl is slightly uncoiled. 



Species 79. (Mus. Cuming.) 



Chondropoma mordax. Chond. testa compresse um- 

 bilicatd, anr/uste turritd, Jlavescente, castaneo varie 

 lenfiffiiiosd, anfractibus rotundatis, lonyitudinaliter 

 dense scabroso-lamellatis, anfractu ultimo castaneo 

 unifasciato ; aperturd pyriformi-circulari, labro tenue 

 eapanso. 



The cutting Chondropoma. Shell compressly uni- 

 bilicated, narrowly turreted, yellowish, variously 

 freckled with chestnut, whorls rounded, longitudi- 

 nally densely scabrously lamellated, last whorl en- 

 circled with a chestnut band ; aperture pyriformly 

 circular, lip thinly expanded. 



Cyclostoma viordax, C. B. Adams, Contr. Conch, no. 1. 

 p. 12. 

 Cistula mordax, Pfeifter. 



Hub. Jamaica. 



The lamellEe of this species are more than usually sca- 

 brous, sharp and cutting. 



Species 80. (Mus. Cuming.) 



Chondropoma Eiisei. Chond. testa vix umbilicatd, 

 conico-turritd, Jlavescente, pallide fasco protniscue 

 punctatd, anfractibus decUvi-conve.vis, loyigitudina- 

 liter dense filoso-lamellatis, lamellis in suturas den- 

 ticulatis ; aperturd oblique ovatd, parvd, labro plano- 

 refexo, radiato. 



Ruse's Chondropoma. Shell scarcely umbilicated, coni- 

 cally turreted, yellowish, promiscuously dotted with 

 pale-brown, whorls slopingly convex, longitudinally 

 densely thread-lamellated, lamellse denticulated in 

 the sutures ; aperture obliquely ovate, smaU, lip 

 flatly reflected, rayed. 



Pfeiffer, Mon. Pneum. p. 418. 



Hab. Porto Kico. 



A conically tuiTeted species, in which the longitudinal 

 lamellae have more the character of fine threads. 



