GUTTURNITJM. 19 



T. LOTORTUM, Linn. PL 11, figs. 78, 79 ; pi. 10, fig. 76. 



Orange-brown ; the principal revolving ribs yellowish white 

 upon the varices, where the interstices become intensified to a 

 dark chestnut color ; aperture white or blush color, the teeth of 

 the outer lip varying from orange to chocolate, with blotches of 

 the same on the columella. Length, 3'5 to 4*5 inches. 



Red Sea, Indian Ocean, Philippines, Central Polynesia. 



T. grandimaculatus, Reeve ffig. 76) belongs here ; the distinc- 

 tive characters are individual only. 



T. PYRUM, Linn. PL 10, fig. 74. 



Orange color; usually lighter within the aperture; the teeth of 

 the lip and columella nearly white. Length, 3 to 4 inches. 



Indian Ocean; Madagascar; Isle of Ticao, Philippines, 



under stones at low water. 

 T. DUNKERT, Lischke. PL 11, fig. 82. 



White or yellowish, more or less irregularly variegated with 

 brown; aperture, columella and lip-teeth white. Length 3*75 in. 



Japan. 



Very like T. pyrum in form, but thinner ; the longitudinal 

 nodules between the varices are much smaller, more continuous 

 and more numerous, being seven or eight in number; whilst in 

 pyrum they are five ; the coloring also, is different. 



T. MUNSTERI, Anton. 



Described as a species of the lotorium group. It has never 

 been figured nor identified. 



Subgenus Gutturnium, Adams. 



The shells of this group possess a peculiar polished, porcel- 

 laneous outer and inner lip, the latter reflected over the coluraella, 

 together with a short, rounded pyriform body and lengthened, 

 narrow, more or less twisted canal. Opcrculum with initial point 

 subinarginal, near the middle of the inner margin. 



T. CYNOCEPIIALUS, Lam. PL 11, figs. 80, 81 ; pi. 15, fig. 152. 



Light yellowish or orange, smetimes with deeper indefinate 

 bands; aperture yellowish white; columella, especially the upper 

 portion, with a brown patch. Length 2'25 to 3 inches. 



West Indies ; Philippines, 6 fathoms in coral sand. 



