AKT. 18 SMALL SHELLS DREDGED BY " ALBATROSS '' DALL 21 



convex whorls; sculpture of evident incremental lines and micro- 

 scopically minute spiral striation; aperture half as long as the shell, 

 narrowly ovate, the pillar twisted hut not distinctly plicate; base 

 imperforate; length, 4.3; diameter, 1.7 mm. U. S. Nat. Mus. Cat. 

 No. 107919. 



Off Fernandina, two specimens. 



This resembles A. nitidus but has the aperture longer in proportion 

 to the total length, the suture slightly turrited and the spiral stria- 

 tion finer. 



ACTEON PARALLELUS, new species 



Shell minute, white, subcylindrical, with an immersed blunt apex 

 and nearly four whorls; suture distinct, briefly shouldered; surface 

 finely spirally striate, the striae microscopically reticulate by faint 

 incremental lines; sides of the last whorl nearly flat, the base short, 

 evenly rounded; outer lip thin, sharp, straight, anteriorly rounded 

 into the slightly thickened and twisted pillar; base imperforate in 

 the adult, a slight chink behind the pillar in immature specimens. 

 Height, 3; maximum diameter, 1.5 mm. U. S. Nat. Mus. Cat. No. 

 107918. 



Off Georgia and Fernandina, four specimens. 



This is remarkable for its subcylindrical turrited whorls. 



ACTEON LACUNATUS, new species 



Shell small, solid, pale gray, of somewhat more than four whorls, 

 with an immersed nucleus; apex blunt, suture distinct, not channelled, 

 whorls only moderately convex; axial sculpture chiefly visible in the 

 grooves, strongly reticulating them; spiral sculpture of (on the last 

 whorl about 16) channelled deep grooves with about equal interspaces 

 over the whole surface; aperture about half as long as the shell, outer 

 lip simple, arcuate, rounding in front into a conspicuously thickened 

 almost folded, short pillar, with an obvious coat of enamel across 

 the body, the base imperforate. Length, 3; diameter, 1.8 mm. U. 

 S. Nat. Mus. Cat. No. 108273. 



Off Georgia, three specimens. 



The spiral sculpture of channelled grooves is coarser than in any 

 of the other forms mentioned. 



A defective specimen found with the above (1082736.) has an acute 

 rapidly enlarging spire, spiral punctate sculpture and a conspicuous 

 groove in front of the suture on all five whorls; the last whorl much 

 the largest. The base is imperforate. Length, 3; diameter 2 mm. 



