ART. 18 SMALL SHELLS DREDGED BY *' ALBATROSS " — DALL 99 



intersections and with the ribs form a pretty regular reticulum; the 

 cord near the somewhat convex base is undulate; the base is smooth 

 and flattish, the canal very short, the aperture rounded. Height, 6; 

 diameter, 1.3 mm. U. S. Nat. Mus. Cat. No. 108348. 

 Off Georgia, one specimen. 



LASKEYA (ONCHODIA) ARGENTEA, new species 



Shell small, silvery white, with one smooth swollen nuclear and one 

 nepionic whorl with small arcuate riblets, succeeded by 10 rather flai- 

 sided adult whorls; suture distinct, not constricted, a slight over- 

 hang to the preceding whorl; axial sculpture of (on the last whorl 

 about 15) narrow, close-set, protractively oblique riblets; the periph- 

 erj'" of the whorls is somewhat anterior; spiral sculpture of 3 small 

 threads, the posterior thread less prominent, all minwtely nodulous 

 at the intersections; sculpture becoming obsolete on the last whorl; 

 base smooth and rounded, canal short. Height, 5.5; diameter, 

 1.4 mm. U. S. Nat. Mus. Cat. No. 333474. 



Off Georgia, 20 specimens. 



A variety is more slender, with the ribs concavely arcuate. U. S, 

 Nat. Mus. Cat. No. 333475; off Georgia, six specimens. 



Another variety (?) from the same locality has the anterior spiral 

 prominent, the sides of the whorl more flattish and sloping. U. S. 

 Nat. Mus. Cat. No. 333476, one specimen. 



LASKEYA (ONCHODIA) DECORA, new species 



Shell small, whitish, with a small smooth nucleus and 1 nepionic 

 whorl with small arcuate ribs, succeeded by 12 flattish whorls with 

 adult sculpture; suture distinct, closely appressed, on a few of the 

 late w^horls the space in front of it is more or less excavated; on the- 

 early whorls are many feeble oblique riblets; these become gradually 

 obsolete on the later whorls which show only incremental axial lines ;: 

 spiral sculpture increases in strength with age, on the early whorls- 

 there are 2 on the later ones 3 subequal not very prominent spirals, 

 beside a finer thread in front of the suture and 1 at the margin of 

 the base; all more or less minutely crenulate; there are also some 

 fine spiral striae in the interspaces; the base is flattish with flexuous 

 incremental lines; aperture small, subquadrate; canal short, mark- 

 edly recurved. Height, 7; diameter, 1.8 mm. U. S. Nat. Mus* 

 Cat. No. 333477. 



Off Georgia, two specimens. 



The sculpture on this species is more condensed and finer than on 

 either of the preceding species. 



LASKEYA (ONCHODIA) ALTHEA, new species 



Shell acute, elongate conic, shining white, with a smooth glassy 

 nuclear whorl, the nepionic whorl with strong, slightly arcuate ribs. 



