484 PROCEEDINGS OF THE NATIONAL MVSETJM. vol. 53. 



EPITONIUM TABOGENSE, new species. 



Shell small, short, conic, white, with nearly three smooth nuclear 

 and four or five subsequent whorls; varices 11, sharp, erect, not 

 continuous over the suture, not angulated or spinose at the shoulder, 

 anteriorly smooth; base rounded, imperforate; aperture subcircular, 

 the thickened margin nearly interrupted over the body. Length, 3 ; 

 diameter, 1.5 mm. U. S. Nat. Mus. Cat. No. 211786. Range, Pan- 

 ama Bay, near Taboga Island, in 62 fathoms. 



EPITONIUM CATALINAE Dall, 1908. 



Shell of moderate size, slender, whitish, with three smooth, brown- 

 ish nuclear whorls and seven or more subsequent whorls; varices 14 

 or 15, angular or even subspinose above, tabulating the profile of 

 the spire, below the shoulder flatly greatly expanded, the distal edge 

 often coalescing with the next preceding varix, the base imperforate, 

 aperture rounded. U. S. Nat. Mus. Cat. No. 198628. Range, Cata- 

 lina Island to San Diego, California. 



The varical margins being very thin are usually more or less broken, 

 but a complete and perfect specimen would probably show a large 

 percentage of coalescence nearly covering the later part of the shell 

 proper. This species would be referred by De Boury to the section 

 Crisposcala. 



EPITONIUM REGUM, new species. 



Shell smaU, whitish, acute, with three smooth nuclear and seven or 

 more subsequent whorls; varices 19 to 20, strongly anteriorly striated, 

 narrowly flatly reflected, continuous over the suture and making 

 about half the circuit of the spire, the anterior faces of the varices 

 slightly irregularly crenulated; they are sharply angulated at the 

 shoulder, giving the profile a turriculate aspect; base rounded, 

 imperforate; aperture rounded, the reflected margin narrow. Length 

 of five whorls, 9; maximum diameter, 4; diameter at decollation, 0.8 

 mm. U. S. Nat. Mus. Cat. No. 206596. Range, off Point Reyes, 

 in 61 fathoms; off San Diego, in 48 to 78 fathoms. 



This species is of the same general type as E. catalinae, but has more 

 numerous and less expanded varices, which are obsoletely crenated. 



EPITONIUM ORCUTTUNUM, new species. 



Shell small, white, acute, with two smooth, short nuclear and six 

 subsequent whorls; varices 10 to 12, narrow, erect, with a narrow 

 reflection and an angle or even a small spine at the shoulder, not 

 continuous over the suture, the anterior surface smooth, the base 

 imperforate. Length, 6.5; diameter, 3 mm. U. S. Nat. Mus. Cat. 

 No. 273998, Range, San Diego Harbor, foot of Broadway, C. R. 

 Orcutt. 



