68 PEOCEEDINGS OF THE NATIONAL MUSEUM vol.70 



Genus STROMBIFORMIS Da Costa 



STROMBIFORMIS ELATA, new species 



Shell slender, whitish, thin, with a somewhat swollen nucleus and 

 about nine moderately convex whorls ; suture distinct, whorls smooth 

 and polished, last whorl less than half the whole length; aperture 

 ovate, a thin callus on the inner lip; base ovately rounded, outer lip 

 arcuately produced. Length, 6.75; diameter, 1.6; last whorl, 2.5 

 mm. U. S. Nat. Mus. Cat. No. 108381. 



Off Georgia, a dozen dilapidated specimens. 



STROMBIFORMIS FUSUS Dall 



Eulima (Liostraca) fusus Dall, Bull. Mus. Comp. Zool., vol, 18, p. 329, pi. 

 19, fig. 116., 1889. 



Off Fernandina, 18 specimens. Off Havana in 400 fathoms, tem- 

 perature 39.75° F., Yucatan Strait, 640 fathoms; U. S. S. BlaJce. 



Genus NISO Risso 



NISO MICROFORIS, new species 



Shell small, conic (discolored but probably) white, with no trace 

 »f color at periphery or at the varical grooves; whorls flat, about 10 

 in number, suture distinct; last whorl obscurely carinate at the pe- 

 riphery, base rounded, umbilicus minute and not carinate at the mar- 

 gin; aperture rounded-quadrate, hardly angulate in front. Length, 

 9.5; diameter, 4 mm. U. S. Nat. Mus. Cat. No. 108374. 



Off Georgia, one adult and two young specimens. 



This has a smaller and less carinate umbilicus than any other 



figured species. The young specimens are whitish. The varical 



grooves are feeble. 



Genus ACLIS Loven 



ACLIS GEORGIANA, new species 



Shell minute, subcylindrical, polished, white, with a blunt apex 

 and about six well rounded whorls; suture distinct, deep, not appres- 

 sed; sculpture only of faint incremental lines; base rounded, aperture 

 obliquely ovate, the margins thin, the outer lip protractively arcuate 

 medially, the axis imperforate. Length of shell, 3; of aperture, 1; 

 diameter, 1 mm. U. S. Nat. Mus. Cat. No. 108020. 



Off Fernandina and Georgia, numerous. 



This resembles A. hermudensis Dall and Bartsch, but is larger and 

 more cylindrical. 



ACLIS DALLI Bartsch 



Aclis dalli Bartsch, Proc. U. S. Nat. Mus., vol. 40, No. 1829, p. 435, pi. 59, 

 fig. 1, May, 1911. 



Shell small, slender, acute, translucent white, polished, with about 

 a dozen well rounded whorls, the apex blunt; suture distinct, rather 

 deep, not appressed; sculpture of faint flexuous incremental lines; 



