282 



Cerithidea crassilabrum A. Adams. 



C. t. elongato-conica, apice Cornea, vix truncata, solida, cinerea, anfractibus convexis, 

 varieibus nullis, ad suturas cingula filiformi instruetis, costellis albidis confertis, anfractu 

 ultimo rotundato, basi sulcato, apertura quadrato-orbiculari, basi subeffusa; labro expanso, 

 valde incrassato, reflexo, arcuato. 

 Long. — ? 



Cerithidea crassilabrum Ä. Adams Proc. Zool. Soc. London 1854 p. 84, 



nee Cer. crassilabrum Krauss. 



Hab. Philippinen. 



This species is remarkable for Ihe great Ihickness of the outer lip and Ihe 

 Ihread-like belt of Ihe sutures; the outer lip and the fore part is marked with two 

 obscure brown spols; in some smaller varieties the ribs are more strongly develo- 

 ped, and the interslices between them are horncoloured, and the upper whorls corneous. 



Cerithidea similis A. Adams. 



C. t. turrito-conica, apice obtusa, truncata, solidiuscula, rufescente, albido-variegata ; 

 anfractibus planiusculis, varice unico ad anfractum ultimum, costis permultis confertis 

 nodulosis, cingula moniliformi ad suturas instruetis; anfractu ultimo rotundato, basi sul- 

 cato; apertura suborbiculari, antice canaliculata; labro expanso extus incrassato, antice 

 producto et auriculato. 

 Long. — ? 



Philippinen. 



Of a pale fulvous brown colour, wilh flat decussated vvhorls and a whitish 

 moniliform band immediately below the sufures. 



Cerithium spadiceum Philipp!. 



C. t. turrita, cingulis inaequalibus graniferis cincta, purpureo-ferruginea ; anfractibus 

 teretibus; cingulis granulatis satis distantibus 5 in anfractibus superioribus, secundo quar- 

 toque eminentioribus; cingulis eminentioribus 4 in anfractu ultimo; varieibus raris; aper- 

 tura ovato-orbiculari alba; canali brevissimo, oblique; labro margine fusco-punctato. 



Alt. 18, diam. 8 mm. 



Cerithium spadiceum Philip pi Zeitschr. f. Mal. 1851 p. 67. 



Yucatan. 



