CONUS. 



Yar. NICOBARICUS, Hwass. PI. 1, fig. 9. 



Reticulating lines chocolate-color, the two bands usually better 

 denned. 



Ceylon, Nicobar Isles, 

 Yar. VIDUA, Reeve. PI. 1, tig. 10. 



Yery like variety Nicobaricus, the bands not so well outlined 

 usually, and having scattered triangular white spots upon them. 



Philippines. 



In this species, as in C. marmoreus, the varieties are entirety 

 arbitrary. 



C. IMPEBIALIS, Linn. PI. 1, figs. 11-13. 



Shell yellowish white, with numerous interrupted revolving 

 lines and spots of dark brown and two irregular light brown 

 bands. Length, 2-3 inches. 



Ceylon, Java to New Caledonia and Viti Is ! es. 



Yar. FUSCATUS, Lam. PI. 1, fig. 13. 



The light brown coloring extends in clouds and irregular 

 markings over the surface, so that the bands can scarcely be 

 defined. 



Zanzibar, Mozambique, Philippines, etc. 

 Yar. VIRIDULUS, Lam. 



The coloring is olive-brown, irregularly but somewhat longi- 

 tudinally disposed, with more or less indication of two bands. 



Zanzibar. 

 C. RECLUZIANUS, Bernardi. PL 1, fig. 14. 



Yellowish white, with irregular broad yellowish brown bands 

 and spots. Length, 58 mill. 



Yellow Sea. 



Only a single specimen occurred, which is possibly faded in 

 coloring. 



C. ZONATUS, Hwass. PI. 1, fig. 15. 



Purple ash, with narrow chestnut revolving lines and white 

 spots, the latter frequently irregularly coalescing. 



Length, 2-3 inches. Ceylon, Nicobar Isles. 



C. MARCHIONATUS, Hinds. PL 2, fig. 16 ; PL 27, fig. 3. 



Yellowish or light brown, with large white rounded triangular 

 spots. Length, 1-1*5 inches. Marquesas Islands. 



