856 



tellis rotundatis armata ; anfractu ultimo univaricoso ; apertura 

 bicanaliculata ; labio externo subquadrato, creuulato ; canali ob- 

 liqua, elongata. 



This shell, figured by Kiener under the name C. columna of 

 Sowerby, is of a light yellowish colour, and has the angles of 

 the ribs rounded off. It is quite distinct from the shell figured 

 in the ' Genera.' Ilab. Island of Masbate, Philippines, Cuming. 



27. Cerithium uncinatum (pi. clxxx. f. 78, 79), Gmel. 

 (Murex), p. 3542. no. 57 ; Wood, Ind. test. pi. 27. f. 150. C. 

 familicum, C. B. Adams, Shells of Panama, p. 152? 



Cerith. testa eonico-turrita, apice acuminata, transversim striata, 

 basi biseriatim nodosa, alba, fusco marmorata et lineato-punctata ; 

 aufractibus convexiusculis, in medio tuberculis acutis arroatisj 

 apertura ovato-subcirculari, alba ; labro plicato, antice producto ; 

 canali angusto, longo, uncinato. 



Kemarkable for the curved canal, and the prominent principal 

 row of coloured knobs. Guadaloup, Jamaica. 



28. Cerithium atratum (pi. clxxix. f. 69). Murex atratus, 

 Born, Mus. p. 324. 11. f. 17, 18. Cerithium atratum, Brug., 

 Diet. no. 12; Kiener, Mon. Cerith. pi. 20. f. 3. 



Cerith. testa turrita, apice acuta, varicosa, ustulata ; aufractuum 

 striis transversis granosis, prope suturas bifariam tuberculatis, 

 varicibus sparsis nodiformibus ; canali truncate 



A black, stout shell, with angular whorls having three rows of 

 beaded ribs on each, and a short, truncated canal. Had. Sicily. 



29. Cerithium caudatum (pi. clxxix. f. 71, 72), Nobis. 



Cerith. testa, C. atrato shnili, sed magis acuta ; apertura magis 

 cxpansa, cauda elongatiuscula. 



Differing from C. atratum in being more acute, having a more 

 spreading aperture and a longer caudal canal. It is also more 

 sharply striated and sculptured. Hab. Guadaloup. 



30. Cerithium striatissimum (pi. clxxx. f. 86, 87), Nobis. 



Cerith. testa grisea, nigricante, elongata, minute spiraliter 

 striata, nodulis minutis regularibus divisis ornata; anfractibus 

 angulatis, ad angulum et ad suturam nodulis majoribus ; apertura 

 subovali. 



The regular bead-like nodules of this grisly-coloured species 

 are divided by the striae, which cross the whole shell in a spiral 



