282 
Cerithidea crassilabrum A. Adams. 
C. t. elongato-conica, apice cornea, vix truncata, solida, cinerea, anfractibus convexis, 
varicibus nullis, ad suturas cingula filiformi instructis, costellis albidis confertis, anfractu 
ultimo rotundato, basi sulcato, apertura quadrato-orbiculari, basi subeffusa; labro expanso, 
valde incrassato, reflexo, arcuato. 
Long. — ? 
Cerithidea crassilabrum A. Adams Proc. Zool. Soc. London 1854 p. 84, 
nec Cer, crassilabrum Krauss. 
Hab. Philippinen. 
This species is remarkable for Ihe greal Ihickness of Ihe outer lip and Ihe 
thread-like belt of Ihe siitures; the outer lip and the fore part is marked with Iwo 
obscure brown spots; in some smaller varieties the ribs are more strongly develo- 
ped, and the interstices belween them are liorncoloured, and the upper whoris 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 instructis; 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 whoris and a whitish 
moniliform band immediately below the sutures. 
Cerithium spadiceum Philippi. 
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; varicibus raris; aper- 
tura ovato-orbiculari alba; canali brevissimo, obliquo; labro margine fusco-punctato. 
Alt. 18, diam. 8 mm. 
Cerithium spadiceum Philippi Zeitschr. f. Mal. 1851 p. 67. 
Yucatan. 
