368 CALLIOSTOMA. 



line, nearly as broad as their interstices. The columella is bounded, 

 by a pit at its insertion. The color is pale, with indistinct rust- 

 brown flames, clouds and dots. Alt. 16, diam. 17 mill. 



Brazil. 



Zizyphinium adspersum BECK (in Roy. Mus. of Berlin). Trochus 

 eximius PHILIPPI, Abbild. i, Trochus, t, 4. f. 7 (not of Reeve). 

 Tr. adspersus Beck, PHIL., Conchyl. Cab., p. 217, t. 32, f. 8. 



May be a synonym of C. eximium, but is more depressed than any 

 specimen of that species I have ever seen. 



C. PALMERI Dall. 



Shell shaped like C. eximium Reeve, 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, alternately 

 spotted with light yellow, brown and white ; basal surface with about 

 eleven similarly colored ribs, which are not granulated, but have the 

 interspaces slightly decussated by the lines of growth. Upper sur- 

 face also painted with narrow waved white and broad livid patches, 

 which are absent below. Umbilical region cobalt blue, or blue- 

 purple, rather excavated, and bordered by a carina ; mouth sub- 

 quadrate, brightly pearly ; columella arcuate, white ; tooth-like 

 process blue. Nucleus of two and a half whorls, flesh color, with 

 revolving lines. (DalL) Alt. 15, diam. 15 mill. 



Guaymas, Mexico. 



It is nearest to eximium, from which it is readily distinguished by 

 the blue umbilical region and the different coloration of the revolving 

 ribs, which in eximium, are much less prominent and are mostly 

 colored with alternate purple, black and white instead of brown and 

 white. The color and sculpture differs from that of C. lima, which 

 is granulate on the base and wants the upper carina. (Dall.) 



Calliostoma palmeri DALL, Am. Jour. Conch, vii, p. 125. 



This pretty shell is evidently intermediate between C. eximium 

 and C. tricolor, but as far as my material goes, seems to be distinct 

 from both. I have copied Dr. DalPs description and comments. 



C. GLORIOSUM Dall. PI. 67, fig. 70. 



Shell six-whorled, acute, whorls gently rounded, with fine, revolv- 

 ing, thread-like ribs ; four or five ribs near the suture granulated. 

 Last whorl roundly carinated, base flattened, with about twenty-five 



