44 PROCEEDINGS OF THE NATIONAL MUSEUM vol.70 



sulcus, to the outer lip. Length of shell, 8.5; greatest diameter near 

 the posterior fourth, 5.5 mm. U. S. Nat. Mus. Cat. No. 107973. 

 Off Fernandina, numerous specimens. 



MARGINELLA CANILLA, new species 



Shell small, white, anteriorly attenuated, of about four whorls, the 

 apex blunt, the suture appressed and only very slightly glazed over; 

 spire short, the periphery of the last whorl quite posterior; aperture 

 narrow, hardly wider in front; outer lip thickened, obscurely crenu- 

 late with a groove behind it, receding behind and in front; inner lip 

 with four subequal and a posterior very feeble plait, the anterior edge 

 of the pillar counted as a plait; canal deep, very short, with a thick- 

 ened margin continuous with the outer lip. Length of shell, 10; of 

 aperture, 8.5; diameter, 4.5 mm. U. S. Nat. Mus. Cat. No. 108329. 



Off Georgia and Fernandina, numerous specimens. 



Viewed from above this species closely resembles M. feruandinae 

 but from the opposite side it is seen to be narrower at the shoulder, 

 with a higher spire, an additional plait, and less distinct denticulation 

 of the outer lip. 



MARGINELLA OCELLA, new species 



Shell small, short, stout, translucent white, with a very short spire 

 of about three and a half whorls, smoothly overglazed; axial sculp- 

 ture of obsolescent incremental lines, surface polished; there is no 

 spiral sculpture; aperture nearly as long as the shell, narrow, the 

 outer lip nearly straight, thickened but not varicose nor crenulate; 

 body and pillar not enamelled, bearing four subequal plaits, the 

 anterior rounding evenly about a rather deep sinus to the outer lip; 

 axis impervious. Length, 5.5; diameter, 3.5 mm. U. S. Nat. Mus. 

 Cat. No. 107977. 



Off Fernandina, abundant. 



MARGINELLA TANORA, new species 



Shell minute, translucent white, blunt-tipped, with about three 

 and a half whorls; suture distinct, narrowly appressed, and con- 

 stricted, the anterior edge minutely axially wrinkled; whorls moder- 

 ately convex, the spire not covered with a glaze; surface smooth, 

 with faint obsolescent incremental lines; aperture more than half the 

 length of the shell; outer lip slightly thickened, simple; inner lip 

 with a thin glaze, pillar short with four subequal thin plaits, includ- 

 ing the prominent anterior edge of the pillar. Length, 3.7; diameter, 

 2 mm. U. S. Nat. Mus. Cat. No. 108331. 



Off Georgia, 25 specimens. 



MARGINELLA INCESSA, new species 



Shell small, cone shaped, polished, creamy white, with a very blunt 

 apex and about four and a half whorls; suture obscure, appressed. 



