328 PROCEEDTXaS OF THE XATIOXAL ^fUSE^^L 



lines" are crossed by very fine, equally spaced axial bars, which lend 

 thoni a punctate appearance. The space between the incised lines is 

 about four times as wide as the lines, and fattened. Periphery 

 and base of the last whorl well rounded, sculptured like the space 

 between the sutures; incised lines eleven. Aperture larije, pyriform, 

 posterior angle acute; outer lip sharp, wavy, showing the incised lines 

 within; columella moderately strong, somewhat curved, and slightly 

 revolute; fold not visilde in the aperture; parietal wall covered by a 

 faint callus. 



The single specimen described above is in the Dunker collection. 

 It has nine post-nuclear whorls which measure: long. 18.1 mm.; diam. 

 6.8 nun. This is very likely one of the specimens from the type col- 

 lection which came from Japan. 



PYRAMIDELLA ( ACTiEOPYRAMIS) FULVA A. Adams. 



Plate XXIII, %. 4. 



Monoptygmn fiilm A. Adams, Proc. Zool. Soc, 1851, p. 222. 



Shell elongate-conic, greyish-black. Nuclear whorls decollated. 

 Post-nuclear whorls well rounded, very high between the sutures, 

 scarce!}' shouldered at the summit, marked ])y lines of growth, and 

 moderate!}' broad, deeply incised, minutely axially barred spiral lines, 

 of which six occur upon the second to sixth whorl and seven upon the 

 seventh to eighth, between the sutures. The spaces between these 

 lines are flattened and minutely spirally striated. Periphery of the 

 last whorl well rounded. Base somewhat prolonged, sculptured like 

 the space between the sutures, having ten of the deeply incised spiral 

 lines. Aperture large, narrow, suboval, posterior angle acute, 

 columella short, moderately strong, twisted and slightly revolute, 

 witii a weak oblique fold near its insertion; parietal wall covered by 

 a thin internal callus. 



The specimen described ))elongs to the Pivtel collection and comes 

 from flapan. It has nine post-nuclear whorls which measure: long. 

 20.3 mm.; diam. 5.8 mm. 



P. {A.)fulva differs from 1\ {A.) eximia by its more slender form, 

 much higher whorls between the sutures, much less shouldered sum- 

 mits, nuich more prolonged base, narrower and more elongate aper- 

 ture, the additional fine spiral striations on the raised portion l)etween 

 the deeply incised spiral lines, and by its color. 



