128 PROCEEDINGS OF THE NATIONAL MUSEUM vol.70 



Off Georgia, 14 specimens and fragments. 



The species recalls C. circumcinctum Dall, but the minor sculpture 

 is quite different. 



CALLIOSTOMA TRACHYSTUM, new species 



Shell minute, whitish subturbinate, with a little more than three 

 well-rounded whorls, with a minute glossy globular nucleus; spiral 

 sculpture of (on the last whorl above the base, five) subequal promi- 

 nent threads, and on the base about five flattish, rather obscure 

 threads; the spirals are not evident on the earlier whorls; axial 

 sculpture on the spire of fine obliquely retractive threads with wider 

 interspaces; as these appear on the last whorl and intersect the spi- 

 rals above the base, minute sharp pustulation is produced, but not 

 on the base which is rounded and very minutely perforate; aperture 

 rounded with a small callus on the pillar. Height, 2 mm.; major 

 diameter, 2.5 mm. U. S. Nat. Mus. Cat. No. 108419. 



One specimen off Georgia. 



This may be not quite adult, and possibly referable to Solariella. 



CALLIOSTOMA (EUTROCHUS?) KAMPSA, new species 



Shell small, white, turbinate, of about five well-rounded whorls 

 with a very minute glassy nucleus of about one whorl; suture dis- 

 tinct, not deep; the first three whorls are almost smooth, the fourth 

 shows three, the last five prominent equally distributed spiral cords 

 above the base, two smaller beaded threads between the preceding 

 suture and the first cord, and about a dozen simple spirals on the 

 base; axial sculpture on the last pair of whorls of obliquely retractive 

 sharp threads which are chiefly conspicuous in the interspaces and do 

 not nodulate the spiral cords; these are feeble on the base except near 

 the verge of the umbilical pit where they nodulate minutely the two 

 nearest spirals; the base is evenly rounded, the umbilicus deep and 

 narrow; the aperture is rounded, simple, with a thin straight pillar, 

 the lips not united across the body; height of shell, 5; of last whorl, 

 3; major diameter, 5 mm. U. S. Nat. Mus. Cat. No. 108423. 



One specimen and two fragments off Georgia. 



This is another species on the border line between Eutrochus and 

 Solariella, conchologically. 



Gemis SOLARIELLA Wood 



SOLARIELLA CALATHA, new sjsecies 



Shell small, somewhat depressed, whitish, with a small globular 

 protoconch and about one smooth nuclear whorl, followed by four or 

 more sharply sculptured whorls; suture obscure, in a deep channel 

 formed by the prominent spiral in f.ont of it; the second and third 

 whorls show a single threadlike spiral between the presutural ridge 

 and the succeeding suture; the last whorl has two prominent cords, 



