362 BULLETIN OF THE 



Ethalia suppressa n. s. 



A singular little species which I have called E. sujjpressa is found on the 

 adjacent coast of Florida. It is white, extremely small (1.75 X 0.75 mm.), 

 flattened above and below, and a little excavated toward the periphery, where 

 are three sharp strong keels with deep sulci between them. The umbilicus 

 is small but open, with a carinal thread; the mouth subcircular, prolonged 

 into a little cliannel at its upper junction with the body, and Avith a broad 

 appressed columella. There are three and a half whorls, the suture is indis- 

 tinct, but marked by a ridge which results from the apertural channel close to 

 it. There is also an indistinct ridge on the flattened top of the whorls. The 

 lines of growth are rather prominent. It was found near Goodland Point, 

 West Florida, by Hemphill. 



Ethalia solida n. s. 



Plate XXVni. Fiffs. 3, 6. 



Shell small, solid, stout, ivory white, of three rounded whorls, the last much 

 the largest. Sculpture of fine incremental lines, sometimes faintly wrinkled 

 near the suture; upper surface rounded, subconic, the whorls not impressed 

 at the suture, which is fairly distinct. Periphery rounded, base subconic, um- 

 bilicus reduced to a minute chink with a twisted callus above it; aperture 

 circular, oblique, with a triangular callus at each end of the columella ; the 

 upper margin declining. Alt. 2.0, max. diam. 2.75 mm. 



Habitat. Station 19, Lat. 23° 3' N., Lon. 83° 10' W., off Bahia Honda, Cuba, 

 in 310 fms., bottom temperature 62°.0 F. 



This is more solid and elevated than any species yet described from this 

 region. 



Subgenus DILLWYNELLA Dall. 



Shell resembling Biloma in form, but minute, depressed, porcellanous, with 

 a thin horny operculum of comparatively few whorls; imperforate, but with a 

 depression bounded by a riblet in the umbilical rib outside of the columella; 

 whorls few with a thin fugacious epidermis; outer lip thin; pillar without 

 teeth, projections, or folds, passing smoothly into the anterior margin. 



Dillwynella raodesta n. s. 



Plate XXI. Figs. 3, 3 a. 



Shell of three or four whorls, smooth, whitish, covered with an extremely 

 thin epidermis which rises in microscopic blisters; spire rounded, depressed, 

 with a distinct suture; sculpture of faint lines of growth except on the base 



