100 PROCEEDINGS OF THE NATIONAL MUSEUM vol.70 



followed by 9 whorls with adult sculpture; suture distinct, appressed, 

 somewhat constricted; whorls convex; axial sculpture of numerous 

 (on the last whorl 24) retractively arcuate narrow ribs with sub- 

 equal interspaces; spiral sculpture of narrow threads, 1 at the suture, 

 2 near the periphery, and in the adult 2 at the margin of the base; 

 the intersections are slightly angular, not nodulous; base smooth 

 except for arcuate incremental lines, and a little concave; aperture 

 squarish, lip thin, pillar thin, twisted, the edge obliquely attenuated, 

 not prominent. Height, 8.5; diameter, 2.7 mm. U. S. Nat. Mus. 

 Cat. 108077. 



Off Fernandina, not rare. 



LASKEYA (ONCHODIA) ELIMA, new species 



Shell whitish, glossy, conic, with 1 low smooth swollen nuclear 

 and 1 nepionic whorl with feeble axial ribbing, followed by about 

 8 whorls rather feebly sculptured, with the periphery nearer the suc- 

 ceeding suture; suture distinct, deeper between the later whorls, 

 closely appressed; whorls moderately convex; axial sculpture of (on 

 the last whorl about 20) narrow slightly arcuate low ribs with wider 

 interspaces; also more or less obvious incremental lines continued in 

 an arcuate manner over the smooth rounded base; spiral sculpture 

 of 1 undulated thread near the suture, then a wide spirally finely 

 striated space without threads, then 2 threads near the periphery, 

 and 2 plain minor threads near the margin of the base, 1 of v/hich 

 appears on the spire behind the suture; the intersections are not 

 nodulous, and the sculpture is more feeble on some specimens than 

 on others; aperture rounded, lip thin, the pillar short, slender, twisted. 

 Height, 7; diameter, 2.3 mm. U. S. Nat. Mus. Cat. No. 108349. 



Off Georgia, six specimens. 



LASKEYA (ONCHODIA) ELSA, new species 



Shell small, slender, whitish, vv^ith 1 small smooth inflated nuclear 

 and 2 nepionic whorls, the latter with 2 peripheral spirals crossed by 

 numerous close fine axial threads, and succeeded by 8 moderately 

 rounded whorls with adult sculpture; suture distinct; spiral sculpture 

 of a small spiral cord at the suture, 2 near the periphery, and 1 at 

 the edge of the base on which the suture is laid; axial sculpture of 

 (on the last whorl 16) narrow riblets with wider interspaces, forming 

 an open reticulum, not nodulous at the intersections; the base is 

 smooth except for flexuous incremental lines; aperture rounded, lip 

 thin, pillar short, attenuated in front; canal very short and recurved. 

 Height, 4.7; diameter, 1.6 mm. U. S. Nat. Alus. No. 108347. 



Off Georgia, five specimens. 



The nucleus of this and the following speci es dift"ers from most of 

 the preceding forms in adding spir al threads to the sculpture of the 

 nepionic part. 



