486 PROCEEDINGS OF THE NATIONAL MLSEVM. vol.53. 



EPITONIUM RHYTIDUM, new species. 



Shell small, subcyllndric, pinkish white, strongly sculptured, of 

 about 10 whorls exclusive of the nucleus which is missing. The type 

 specimen retains six whorls, rounded and with a deep suture; varices 

 18 or 19, low, rounded, crenate; whorls spirally sculptured with (on 

 the last whorl seven or eight) flattish cords; base flattish, nearly 

 smooth, imperforate, marginated by a strong cord; aperture rounded. 

 Length of decollate type-specimen, 5.5; diameter, 2 mm. U. S. Nat. 

 Mus. Cat. No. 207604. Range, Galapagos Islands, in 40 to 634 

 fathoms. 



This little shell has a remarkable sculpture, recalling some Pyrami- 

 dellids, none of which, however, have a reflected margin to the lip. 

 It is probable that its habitat is in the shallower water, and the 

 presence of the broken specimen in the deep water adventitious. 



It is quite likely that among De Boury's numerous sections there is 

 one (perhaps Funiscala) into which this would fit, but not having 

 typical specimens of all of them for comparison I refrain from select- 

 ing a sectional name for it. 



EPITONIUM ZETEKl. new speciea 



Shell small, white, thin, with about 8 whorls, the nucleus of about 

 one and a half glassy rounded whorls (with a portion lost?); last 

 whorl with obscure, close-set spiral striae, with no basal disk or 

 cordon; whorls rounded, suture deep; there are 11 sharp, erect, 

 rather low varices, smooth on the front with no spines or angles, 

 descending into the suture and regularly continuous over the spire, 

 which they about half encircle; aperture nearly circular, axis imper- 

 forate. Height, 6.0; maximum diameter, 3.0 mm. U. S. Nat. Mus. 

 Cat. No. 324463. Range, Panama, collected by Mr. James Zetek. 



This species is nearest to xaniusi but is more solid, has continuous 

 varices, less emphatic spiral sculpture, and increases more rapidly in 

 diameter. The former has not been found at Panama 



EPITONIUM IMBREX, new species. 



Shell minute, white, thin, with six or more whorls, the nucleus 

 eroded and the last whorl of the type-specimen incomplete; there i8 

 no spiral sculpture, basal disk, or cordon; on the last whorl are about 

 22 varices, thin, low, smooth, protractive behind at the suture, with 

 a hint of angulation at the periphery and remarkably arcuate on the 

 imperforate base; the varices are continuous, somewhat appressed 

 at the sutm'o, and encircle about one quarter of the spire. Height, 

 2.3; diameter of last whorl, 1.0 mm. U. S. Nat. Mus. Cat. No. 

 324464. Range, beach at Panama, James Zetek. 



This little species has more varices in proportion to its size than 

 any other thus far repoited, and is remarkable for the sigmoid 

 arcuation of the varices. 



