OF CONCHOLOGY. 125 



TROCHID^E. 



Calliostoma affinis, n. s. 



Shell moderately elevated, of seven whorls, rounded and in- 

 flated. Sculpture of iine, rather sharp, revolving ridges, with 

 fine intercalated striae, all decussated by the lines of growth. 

 There are about ten primary ridges between the sutures of the 

 antepenultimate whorl. Apex acute, upper whorls rather flat- 

 tened, but slightly convex, last whorl rounded, periphery not 

 carinated, aperture rounded-quadrate. Base very convex, sculp- 

 tured with ten or twelve grooves, more crowded toward the peri- 

 phery. Columella callous, oblique, with a groove between the 

 callus and the basal rib. Mouth silvery-pearly. Color light 

 orange to yellowish-white, with irregular patches of chestnut 

 brown and white on the upper surface of the whorls and on the 

 periphery. Nucleus of two and a half smooth brown whorls. 

 Suture distinct but not conspicuous. 



Maj. diam. -9 ; min. diam. '1 ; alt. -9 in. ; defl. 80°. 



Habitat. — Simoda, Japan, five specimens. 



I have searched everywhere, including the worthless mono- 

 graph of Ziziphinus, by Reeve, without finding any species to 

 which this might be referred. It is nearest C. unicum, of 

 Dunker, a fine specimen of which was obtained at the same lo- 

 cality. The patches of color are very similarly distributed, but 

 the coloration is quite different. There is no coloration peculiar 

 to the ribs of affinis, but in unicum the ribs are alternated with 

 brown and white. The whorls of the latter are shouldered, of 

 the former almost flat. The base of affinis is of a plain yellowish 

 brown, in unicum the painting and dotted markings extend over 

 all the shell. It has not the granulated surface of C. Antoni. 



Calliostoma Palmeri, n. s. 



Shell shaped like eximium, Rve., but rather more depressed, 

 of seven whorls, glistening and polished, though sculptured with 

 finely granulated, revolving lines. Upper whorls carinate and 

 shouldered, last whorl bicarinate. Sculpture consisting above 

 of about fifteen revolving, elevated, finely granulated lines, al- 

 ternately spotted with light yellow brown and white ; basal sur- 

 face with about eleven similarly colored ribs, which are not 

 granulated, but have the interspaces slightly decussated by the 

 lines of growth. Upper surface also painted with narrow waved 

 white and broad livid patches, which are absent below. Um- 

 bilical region cobalt blue, or blue-purple, rather excavated, and 

 bordered by a carina ; mouth subquadrate, brightly pearly ; 



