CONUS. 4] 
C. citrinus, Kiener (fig. 18), and C. sulphuratus, Kiener (fig. 
17), are half-grown and young specimens; C. tenuis, Sowb. (PI. 
27, fig. 5), is another young shell, but differing in color. 
Var. Crcin1#, Chenu. PI. 12, fig. 24: Pl. 27, fig. 6. 
Shell colored like the type, but encircled with punctations 
impressed in lines. 
C. classiarius, Kiener (PI. 12, fig. 24), is probably identical. 
C. Rattus, Hwass. Pl. 12, figs. 25-27. 
Shell yellowish brown or ash-color, often with fine close chest- 
nut revolving lines, with large white spots and maculations 
usually forming an interrupted central band and another at the 
shoulder. Length, 1°25-1-75 inches. 
Red Sea, Ceylon, New Caledonia, Tahiti, etc. 
C. Taheitensis, Hwass (fig. 26), is a color-variety of this spe- 
cies, and C. viridis, Sowb. (fig. 27), is an unusually colored 
juvenile. 
C. SEMIVELATUS, Sowb. PI. 12, fig. 29. 
Shell plum-color, indistinctly light-banded in the middle and 
on the shoulder; aperture purple. Length, 16 mill. 
Red Sea. 
C. Liscuxreanvus, Weinkauff. Pl. 12, fig. 28. 
Whorls of the spire with shallow channel, body-whorl smooth, 
striate at the base; sulphur-yellow, without ornamentation except 
maculations on the spire; aperture white. Length, 52 mill. 
; Japan. 
Resembles C. mutabilis, Chemn., but is immediately distin- 
guished by its channeled spire. 
C. cLassIARius, Hwass. PI. 12, figs. 30-34. 
Shell olive-brown, or ash-color, with a white central band, and 
usually another obsolete one below the shoulder-angle, encircled 
by numerous chestnut and white articulated lines; spire macu- 
lated with chestnut ; aperture light chocolate with central white 
band. Length, 1:25-1-75 inches. 
Red Sea. 
C. Blainvillei, Kiener,and C. splendidulus, Sowb. (fig. 31), are 
identical, and C. Ruppellii, Reeve (fig. ez neud C. adustus, Sowb. 
(fig. 33), are young shells. 
