ART. 6 A NEW WEST INDIAN" MOLJ:.rjSK FAUNULA BABTSCH 11 



that separate them. Suture well impressed, rendered slightly wavy 

 by the axial riblets. The last whorl has a strong basal carina at the 

 junction of the outer and umbilical wall, which is rendered crenu- 

 lated by the axial ribs, which extend quite prominently upon the 

 umbilical wall. The last whorl is solute for a third of a turn. Aper- 

 ture almost subquadrate with the peristome expanded and reflected. 

 The pillar is slender, solid with a median twist. 



Remarks. — The specimen described and figured, U.S.N.M. No. 

 403914, has 10.5 whorls, and measures ; Height, 7.8 mm ; diameter, 

 2.6 mm. 



U.S.N.M. No. 403885 contains three additional specimens. 



MACROCERAMUS BEATENSIS, new species 



Plate 1, Fkjurh 15 



Shell small, elongate conic, pale brown, with darker irregular axial 

 bands of chestnut-brown, the first two turns of the apex being pale 

 brown, the succeeding one chestnut-brown; the aperture pale 

 brown. Nuclear whorls 2.2, strongly rounded, smooth. Postnuclear 

 whorls moderately well rounded, separated by a moderately impressed 

 suture, the first three marked by rather strong, decidedly retractively 

 curved axial riblets. After this the axial riblets become less con- 

 spicuous and more distantly spaced. The spiral sculpture consists of 

 eight series of obsolete pits between the summit and the periphery 

 of the last whorl. These pits appear like malleations between the 

 obsolete riblets. The periphery is marked by an obsolete thread. 

 The base is well rounded, marked by the continuation of the axial 

 riblets and poorly developed spiral pittings, narrowly umbilicated. 

 Aperture subcircular; outer lip slightly expanded and slightly 

 reflected. Columella moderately expanded and reflected. Parietal 

 wall covered by a thin callus. 



Type.—T\\Q type, U.S.N.M. No. 403915, has 9.5 whorls, and meas- 

 ures : Height, 10 mm ; diameter, 3.9 mm. 



Remarks.— [J.^.'^M. No, 403887 contains three additional 

 specimens. 



VARICELLA BEATENSIS. new species 



Plate 1, FtQUEBJ 12 



Shell elongate conic, pale horn-colored, with irregularly spaced 

 vertical bands of pale brown, which is also the color of the tip of 

 the columella. Nuclear whorLs, 2.1, strongly rounded, smooth. Post- 

 nuclear whorls rather high between the summit and the suture, very 

 slightly rounded, separated by the slightly impressed suture and 

 marked by strongly impressed, almost vertical axial lines, which 



