50 CONUS. 
C. PLANORBIS, Born. PI. 14, fig. 81. 
Whorls of spire striate, maculate with chestnut ; body-whorl 
with beaded striz below, orange-brown or chestnut, frequently 
light-banded in the middle, and ‘sometimes at the shoulder also, 
base darker-colored. Length, 1°25-2 inches. 
Mauritius, Ceylon, New Caledonia, Philippines, Polynesia. 
This species is called C. senator, Linn., by Reeve and others, 
but the description in the Systema Nature shows that the iden- 
tification is wrong. Hanley was not able to identify C. senator 
in the Linnean collection. Sometimes the granular striz cover 
the entire surface. ; 
C. cIRcUMSIGNATUS, Crosse. PI. 14, fig. 82. 
Shell covered with orange-brown upon the body-whorl except 
at the shoulder, base and centre, where occur irregular bands or 
blotches of white, with narrow articulated lines of chestnut and 
white, sparingly maculated with orange-brown. Length, 30 mill. 
Habitat unknown. 
Dr. Weinkauff makes this — the granular variety of C. 
planorbis; he has evidently mistaken the articulations for 
granulations. 
C. CuEnul, Crosse. PI. 14, figs. 83, 84. 
Shell thin, with depressed carinate and striate spire, which is 
yellowish, maculated with brown; body-whorl striated below, 
yellowish, with two series of longitudinal forked and irregular 
dark brown markings, interrupted in the middle and at the base; 
there are traces of distant narrow brown revolving lines; 
aperture white. Length, 2 inches. 
New Caledonia. 
In the Journal de Conchyliologie, 1874, Crosse says that this 
species is very close to some varieties of C. planorbis, but its 
system of coloration is more elegant. C. Loebbeckeanus, Weink. 
(fig. 84), appears to me to be only a slight color-variation. 
Finally, C. Chenui is closely related to varieties of the next 
species. 
C. LINEATUS (Chemn.), Auct. Pl. 14, fig. 85. 
Shell orange-brown to dark chestnut, finely narrowly lineated 
witha darker color, with white blotches arranged in upper, middle 
