859 



keels on the lower part of the last whorl armed with large tu- 

 bercles. Island of Masbate, Philippines, II. Cuming. 



39. Cerithium spathuliferum (pi. clxxx. f. 94), Nobis. 



Cerith. testa, pyramidali, albida, spiraliter lineis elevatis cincta, 

 longitudinaliter plicis continuis costata ; anfractibus rectis, medio 

 et inferne spiraliter costis spatuliferis cinctis, ultimo costis acu- 

 leatis tribus, tuberculis spatuliformibus ; apertura oblique ovali, 

 postice canahculata, antice canali producto ; labio externo angula- 

 tion aculeate 



This white species is remarkable for the broad spatulse into 

 which the spiral keels are formed. The whorls have straight sides, 

 with a belt of spatula? in the middle, and one below close to the 

 suture of each : in the last whorl the spatulate keels are more 

 fully developed. The only specimen known is from the late Mr. 

 Sowerby's collection. 



40. Cerithium umbonatum (pi. clxxx. f. 95), Nobis. 



Cerith. testa pyramidali, acuta, clavata, fusco variegata ; anfrac- 

 tibus prope suturam angulatis, ad angulum noduliferis, ultimo 

 magno ; apertura elevata ; labio interno postice uniplicato ; labio 

 externo crasso, expanso. 



This shell is remarkable for the greater breadth of the last 

 whorl and aperture. Mr. Cuming's collection. Jamaica. 



41. Cerithium armatum (pi. clxxix. f. 68 ; pi. clxxx. f. 96), 

 Pliilippi, Abbild. pi. i. f. 9. 



Cerith. testa acuminata, variegata ; anfractibus gradatis, plani- 

 usculis, spiraliter moniliferis, prope suturam nodulis magnis pro- 

 minentibus armatis; apertura subquadrata; labio interno postice 

 uniplicato. 



A very pretty species, remarkable for the prominent row of large 

 tubercles on the upper angle of the whorls. Hab. Island of Ticao, 

 Philippines, Cuming. 



42. Cerithium Rupellii (pi. clxxix. f. 65), Philippi, Ab- 

 bild. pi. i. f. i. 



Cerith. testa elongata, fusco variegata, costis noduliferis crebris 

 armata ; apertura breviuscuhi ; canali brevi ; labio externo subin- 

 crassato, crenulato. 



A graceful shell, spotted with brown and ornamented by beaded 

 ribs, which are angulated in the centre. Locality unknown. Mr. 

 Cuming's collection. 



