GUTTTTRNTUM. 28 



Has fewer varices, and the shoulder angle is not so gibl^ously 

 nodulose as in the next species ; 3'et I suspect them to be 

 identical. 



T. GIBBOSUS, Brod. PL 12, figs. 101, 103. 



Shell with four varices ; gibbous ; strongly tuberculated on 

 the margin of the flat shoulders ; spire scalariform ; surface 

 closel}^ covered with chain-like minute tnberculations. Yellowish 

 brown. Length, 2*5 inches. 



Panama ; Monte Christi, W. Cohimbia, 7 fathoms, coarse sand. 



T. LoBBECKEi, Lischke. PI. 12, fig. 106. 



Very closely allied in general appearance, with T. exaratus 

 Reeve, but the whorls are rounder, with shorter spire and canal; 

 shoulder more rounded ; spiral strise finer ; ribs between the 



varices obsolete. Length, 1*5 inches. 



Ja2}an. 

 T. Pfeifferianus, Reeve. PI. 13, fig. 107. 



Yellowish white, with irregular darker bands ; whitish within 



the aperture. Length, 2".5-3 inches. 



Philippines. 

 T. RETUsus, Lam. PL 13, fig. 108. 



Yellowish-brown, sometimes maculated or banded with darker 

 brown ; aperture white within. Length, 2 to 2*5 inches. 



Indian Ocean, Mauritius, 

 T. PYRULUM, Ad. & Reeve. PL 13, fig. 109. 



Light yellowish brown. Length, 1*75 inches. 



East Indies. 

 T. ENCAUSTicus, Rceve. PL 13, fig. 110. 



Light j-ellowish brown. When adult, the columella and lip 

 are thickly enamelled, pale orange-brown. Length, 1-75 inches. 



/. Ticao, PJdlippines ; on the reefs. 



T. TUBEROsus, Lam. PL 13, figs. 111-113. 



Light to dark brown, the ribs and tubercles lighter or whitish, 

 with sometimes, a median white band. Lip and columella thickly 

 enamelled, white or yellowish ; interior of aperture orange red. 

 Operculum with terminal nucleus. Length, 1-5 to 2*5 inches. 

 West Indies, Indo-Pacific 0., Mauritius, Polynesia. 



