ART. 19 NEW SPECIES OF MOLI^USKS DALL 7 



CALLIOSTOMA HENDERSONI, new species 



Shell of moderate size, depressed conic, with a smooth nucleus of 

 about one whorl, and six subsequent sculptured whorls, which over- 

 hang a little the succeeding suture and between the suture and the 

 periphery are slightly concave; color pinkish j^ellow with the periph- 

 eral cord maculated with pink and white spots; spiral sculpture 

 on the spire of on the earlier whorls four, on the penultimate whorl 

 six, and on the last whorl seven or eight subequal beaded threads 

 with narrower interspaces; on the periphery a much stronger smooth 

 cord, and on the base 10 flattened, medially grooved, broadish, smooth 

 spirals with narrower interspaces; the umbilical area is narrow and 

 deeply perforate; aperture is subquadrate, the pillar short, arcuate, 

 then forming an angle with the basal lip ; interior of the aperture 

 pearly white and smooth. Height of shell, 20; of last whorl, 13; 

 maximum diameter, 24 mm. U. S. Nat. Mus. Cat. No. 333703. 



Collected by the late John B, Henderson, jr., in 1916, off the Sambo 

 Reefs, Florida, in 118 fathoms. 



This attractive shell is nearest to C. psyche Dall, but differs in color, 

 details of sculpture, and in the perforate umbilicus. 



CALLIOSTOMA SARCODUM, new species 



Shell small, dark red, with irregularly distributed subaxial white 

 streaks, the spirals on the base more or less articulated with whitish 

 and deeper red spots; nucleus very small, smooth, of about one whorl, 

 with six subsequent, sculptured, flattish whorls; spiral sculpture of 

 (on the last whorl six) beaded subequal threads, with a minor inter- 

 calary undulated thread in the interspaces; the spirals on the base 

 are flattened and about eight in number, the intercalary threads very 

 small; the margin of the base is subangular; the umbilical area is 

 very small, white, and with a well marked pit behind the very short 

 pillar, but no perforation; aperture subquadrate, the tliroat pearly 

 white, the surface near the outer lip, for a short distance grooved in 

 harmony with the outer sculpture, a feature perhaps due to imma- 

 turity. Height of shell, 8 ; of last whorl, 6 ; maximum diameter, 8 mm. 

 U. S. Nat. Mus. Cat. No. 216955. 



Collected by J. B. Henderson jr. at Barbados in 4 to 6 fathoms 

 off '' Lord's Castle." 



EUCHELUS BARBADENSIS, new species 



Shell small, flesh color, with scattered brownish dots, and a glassy 

 nucleus of a whorl and a half with about three subsequent whorls; 

 the entire surface covered with (on the last whorl 15) subequal beaded 

 cords with narrower interspaces; whorls rounded, suture obscure; 

 there is no obvious axial sculpture; aperture subcircalar, the peri- 

 treme crenulate by the external sculpture, the pillar broad, white, 



