46 BULLETIN OF THE 



glass. On the upper surface of the whorls are (eight in the last whorl) sim- 

 ilar beaded ribs, several of which have rosy beads alternating with crimson 

 ones ; the general rosy hue is clouded darker and lighter alternately, but in 

 an indefinite way. The sculpture of the whole shell is very uniform. Alt. 9.5. 

 Basal diam. 7.0. Diam. of aperture, 3.5 mm. 



Station 11, 37 fins. Lat. 23° 43' N., Long. 83° 25' TV., near Havana. 



This is one of the early finds of Pourtales, lost at Chicago, afterward re- 

 found, and has been known to me for a good many years. It recalls C. mac- 

 andrce from Panama in general form, and is one of a group of small species, 

 apparently hitherto undescribed, which have a considerable general resem- 

 blance to one another, and to some West American forms. 



Calliostoma apicinum n. s. 



Shell conical, of six whorls, elevated, thin, rather solid ; whorls and base 

 flattened, the sutures hardly visible, the last whorl subangulated, but not 

 carinated, on the periphery. Nucleus prominent, bubble-shaped, shining, 

 opacpue white ; second whorl deep rose-pink, with three longitudinal beaded 

 ribs ; rest of shell yellowish white, with indistinct clouds of brown trans- 

 versely disposed on the upper whorls ; the lower rib on the second, third, and 

 part of the fourth whorls with somewhat larger beads than the rest, crowning 

 the suture ; the upper side of the last whorl with about nine revolving beaded 

 ribs with a slight tendency to run in pairs, beginning at the periphery ; base 

 with eleven somewhat flattened ribs, only the two next the pillar beaded, the 

 others crossed by evident lines of growth, radiating in a wavy manner ; umbilicus 

 a hardly visible puncture ; pillar grooved, hardly thickened, aperture not very 

 oblique, crenulated (especially below) by the ends of the ribs, subrectangular. 

 Alt. 7.5. Basal diam. 7.0 ; of aperture, 2.0 ; width of do. 4.0 mm. 



Barbados, 100 fms. Off Havana, Sigsbee, 175 fms. 



CaUiostoma sapidum n. s. 



This species bears a strong superficial resemblance to the last, and is best 

 described by a differential diagnosis ; it is entirely white, not colored ; it has 

 seven whorls in a shell of the same size as an apicinum with six ; the sutures 

 are slightly channelled, and therefore distinctly visible ; there are four instead 

 of nine beaded ribs on the upper side of the last whorl, and the beads aiv 

 i, the interspaces wide enough to Bhow the lines of growth crossing 

 them ; the nodules on the peripheral rib in this whorl are undulations rather 

 than beads, and sufficiently large to give a crenulated appearance to the border 

 of the shell when viewed from below ; there are eighl revolving ribs on the 

 base crossed by tine ridges following the lines of growth ; there is no umbilicus 

 orcalln- ; the pillar is not grooved or thickened ; the aperture is more oblique 

 and proportionately less wide. Alt. 5.0. I'.asal diam. 4.12. Alt. of aperture, 

 l.r. Width of do. 2.0 nun. 

 on 2, B05 tin-. 



