K0.2217. THE GENUS EPITONIUM AND ITS ALLIES— DALL. 485 



EPITONIUM BIALATUM, new species. 



Shell stout, short, white, with a flesh-colored peripheral band in 

 the later whorls; two short, smooth nuclear and six subsequent 

 whorls; varices seven or eight, white, soUd, erect, with a produced 

 angulation at the shoulder, smooth anteriorly, continuous over the 

 suture and making about half the circuit of the spire; base imper- 

 forate, aperture subovate, the reflected margin broad and much pro- 

 duced at the shoulder and in front. Length, 15; diameter, 10 mm. 

 U. S. Nat. Mus. Cat. No. 180798. Range, GuK of California, near 

 La Paz, in 10 fathoms, and West Mexico. 



This is a specially well marked species, perhaps related to E, 

 statuminatum Sowerby. 



EPITONIUM ZEPHYRIUM. new species. 



Shell white, polished, solid, conic, with about five whorls exclusive 

 of the (lost) nucleus ; varices, nine, low, continuous, and bridging the 

 suture, encircling about one-third of the spire in ascending to the 

 apex, with smooth interspaces; varices smooth in front and without 

 spines or angulation; base rounded, imperforate, without disk or 

 cord; aperture subovate with narrow margin somewhat expanded 

 in front and at the suture. Length, 11.5; diameter, 6 mm. U. S. 

 Nat. Mus. Cat. No. 56056. Range, San Diego, California. 



EPITQNIUM DASICUM. new species. 



Shell white, with a brownish narrow band in front of the suture 

 when fresh, with seven whorls exclusive of the (lost) nucleus; varices 

 11, low, roimded, cord-hke, continuous over the suture into which 

 they dip, and making nearly half a turn in ascending around the spire, 

 one or two near the terminal are larger than the rest; interspaces 

 smooth; base rounded, marginated by a strong cord, imperforate; 

 aperture subovate, the margin narrow, somewhat patulous in front. 

 Length, 15 ; diameter, 7 mm. U. S. Nat Mus. Cat. No. 56049. Range, 

 Gulf of CaUfornia to Panama. 



EPITONIUM ROBERTI, new species. 



Shell white, solid, rather short, with two smooth nuclear and six 

 subsequent whorls; varices 13, smooth, low, erect, continuous over 

 the suture into which they dip, and encircling about one-fourth of 

 the spire in ascending to the apex; base rounded, imperforate, mar- 

 ginated by a slender not prominent cord; aperture subovate, with 

 a narrow margin, slightly wider on the side of the axis; the varices 

 on the later whorls are without angulation or spines, but on the early 

 whorls a small spine is developed at the shoulder which in subsequent 

 whorls becomes obsolete and finally lost. Length, 12; diameter, 6.5 

 mm. U. S. Nat. Mus. Cat. No. 46251. Range, Gulf of California. 

 Dr. Robert E. C. Stearns. 



