no. 2217. THE GENUS EPITONIUM AND ITS ALLIES— DALL. 483 



Length, 14; diameter, 4.5 mm. U. S. Nat. Mus. Cat. No. 59334. 

 Range, Acapulco, Mexico. 



EPITONIUM MUSIDORA, new euedes. 



Shell thin, white, slender, with an acute spire and deep suture; 

 varices 10 or 11, low, thin, sharp, slightly reflected, anteriorly smooth, 

 continuing over the suture into which they dip, and making a nearly 

 complete circuit of the spire ; base rounded, aperture subovate ; there 

 is a shght broadening of the varix at the shoulder of the whorl, but 

 no angulation. Length, 13; diameter, 5 mm. U. S. Nat. Mus. Cat. 

 No. 201203. Range, San Diego to Panama. 



EPITONIUM COLUMNELLA, new species. 



SheU small, white, with about five whorls exclusive of the (lost) 

 nucleus; the whorls rather rapidly enlarging; varices 11, high, thin, 

 angular and spinose at the shoulder, and distinctly angular at the 

 margin of the base, on which the reflected portion is distinctly 

 flattened, but with no basal disk or cord; base imperforate, aperture 

 rounded, the reflected margin produced at the shoulder and in front. 

 Length, 2.75; diameter, 1.75 mm. U. S. Nat. Mus. Cat. No. 111220. 

 Range, Panama Bay, in about 30 fathoms. 



EPITONIUM BERRYI Dall, 1907. 



This species has 22 varices without angles or spines and ranges 

 from San Pedro Bay in 200 fathoms to San Diego in about 75 fathoms. 

 It is of the type of the West Indian E. inconspicuum Sowerby, 1847, 

 but much smaller. 



EPITONIUM HABELI, new species. 



Shell small, acute, conical, white, with five rounded whorls exclu- 

 sive of the (lost) nucleus; varices 16, low, rather thick, not reflected 

 or angular, continuous over the suture and making about half the 

 circuit of the spire; upper whorls dehcately spirally striate, the 

 sculpture becoming obsolete on the fourth and entirely absent from 

 the last whorl; base rounded, with a small umbiHcal perforation; 

 aperture rounded, the reflected margin produced near the axis in 

 front. Length, 7.5; diameter, 4 mm. U. S. Nat. Mus. Cat. No. 

 56055. Range, Galapagos Islands, collected by Dr. Simon Habel. 



This species completely bridges the gap between Asperiscdla and 

 Nitidoscala. 



EPITONIUM DIEGENSE, new species. 



Shell minute, whitish, with five whorls exclusive of the (defective) 

 nucleus; varices 11 to 12, sharply anteriorly striated, angular at the 

 shoulder, continuous over the suture, and making about half the 

 circuit of the spire; base rounded, imperforate; aperture subovate, 

 the reflected margin angular at the shoulder. Length, 5; diameter, 

 2 mm. U. S. Nat. Mus. Cat. No. 211904. Range, San Diego to 

 La Paz, in 7 to 10 fathoms. 



