482 PROCEEDINGS OF THE NATIONAL MUSEUM. tou53. 



EPITONIUM CALIFOR>aCUM, new species. 



Shell small, white, solid, with seven whorls and a very smaU 

 brownish nucleus of a whorl and a half; varices 9 or 10, low, sharp, 

 reflected, anteriorly axially striated, with a very small sharp spine at 

 the shoulder; suture deep, the whorls almost separated, rounded; 

 base rounded, imperforate; aperture short-ovate, its inner margin 

 resting on the preceding varices, not touching the body of the whorl. 

 Length, 10.5; diameter, 4 mm. U. S. Nat. Mus. Cat. No. 201202. 

 Range, San Miguel Island, California, to the Gulf of CaUfomia. 



EPITONIUM RECTILAMINATUM, new species. 



Shell minute, whitish, with three polished blunt nuclear and four 

 subsequent whorls; varices 18 or 19, low, uniform, straight, not con- 

 tinuous over the suture, with equal interspaces, sharp and erect; 

 without angle or spine ; base rounded, imperforate ; aperture rounded, 

 slightly oblique. Length, 3.5; diameter, 1 mm. U. S. Nat. Mus. Cat. 

 No. 110430. Range, Monterey Harbor, California, in 12 fathoms, to 

 the Gulf of California. A quite similar but more rapidly increasing 

 species is found at the Galapagos Islands, in 634 fathoms, but the 

 specimen is too immature to name. 



EPITONIUM CAAMANOI Dall and Bartsch, 1910. 



Has 12 varices rather broadly and flatly reflected and comes from 

 Barkley Sound, Vancouver Island, in 7 to 10 fathoms. 



EPITONIUM TABULATUM, new species. 



Shell slender, acute, thin, duU white, with two and a half smooth 

 nuclear and 12 or more subsequent whorls; varices 16, thin, sharp, 

 well reflected, anteriorly striated, with a blunt angle at the shoulder, 

 behind which the varix is somewhat concave, giving a tabulate profile 

 to the whorls; the varices more than half encircle the spire, being 

 continuous over the spire; in perfect specimens there is a very thin 

 calcareous outer layer to the shell; base rounded, aperture rounded, 

 the reflected margin narrow. Length, 18; diameter, 7.5 mm. U. S. 

 Nat. Mus. Cat. No. 109569. Range, San Pedro, California, to the 

 Coronado Islands. 



The length given above is of the decollate type specimen of five 

 whorls; the entire length, if perfect, would be about 25 mm. It is a 

 Crisposcala. 



EPITONIUM APPRESSICOSTATUM, new species. 



Shell slender, acute, white, with two and a half smooth nuclear 

 and six or seven subsequent whorls; varices 13, low, flat, closely 

 apprcssed to the whorl, continuous over the suture and nearly half 

 encircling the spire; suture moderately deep, base rounded, imper- 

 forate, aperture subovate, the margin slightly angular in front. 



