382 PROCEEDIXOS OF THE XATJOXAL MUSEUM. 



the sutures, having eight spiral keels. Aperture oval, somewhat effuse 

 iit the jum-tion of the columella and outer lip, posterior angle obtuse; 

 outer lip strong, rather thick, showing as many low, rounded lirations 

 within as there are spaces between the keelson the outside; columella 

 strong, armed with a well-developed oblique fold a little anterior to 

 its insertion: parietal wall covered by a thin callus. 

 The specimen measures: long. 2.2 mm.; diam. l.P. mm. 



PYRAMIDELLA (SYRNOLA) CINNAMOMEA A.Adams. 

 Plate XXVI, fig. 1. 

 Elvsa nnmtmomea A. Adams, Pror. Zool. Soc, 1862, p. 237. 



Shell slender, elongate-conic, of almost rectilinear outline, polished, 

 yollowish-brown. Nuclear whorls two and one-half, rather large, hel- 

 "icoid, moderately elevated, smooth, having their axis at a right angle 

 to the axis of the later whorls and about one-fourth immersed in the 

 first of them; the periphery of the nucleus extends slightly beyond 

 the outline of the spire on the left side. Post-nuclear whorls quite 

 high between the sutures, flattened, separated })y slight sutures marked 

 oidy bv faint lines of growth and numerous extremely tine and closely 

 placed spiral striations. Periphery and base of the last whorl well 

 rounded, the latter rather short. Aperture small, suboval, posterior 

 angle narrow and acute, outer lip thin, columella short, curved, mod- 

 erately strong, with an inconspicuous oblique fold near its insertion; 

 parietal wall covered by a thin callus. 



The specimen described and tigured belongs to the Pfetel collection 

 and comes from Japan. It has eight post-nuclear whorls, and measures: 

 long. 4.2 mm.; diam. 1.1 mm. 



This shell has the aspect of a small, straight Eulhna. 



PYRAMIDELLA (SYRNOLA) BRUNNEA A. Adams. 



Plate XXIV, figs. 4, 7. 



Obelisnis hrunneus A. Ad.\m8, in Powerby Thes., 1854, p. 810, pi. CLXxi, fig. 35. 

 Ohelimiiihuxeus Gov-LV), Proc. Bost. Soc. Nat. Hist., VII, 1861, p. 403. 



Shell elongate-conic, light brown, shining. Nuclear whorls two 

 and one-half, small, depressed helicoid, polished, having their axis 

 at a right angle to the axis of the latter whorls and about one-sixth 

 immersed in the first of them. Post-nuclear whorls flattened, slightly 

 shouldered, rather low between the sutures, marked only ))y lines of 

 growth and microscopic spiral stria?. Sutures subchanneled and 

 minutely crenulated. Periphery and base of last whorl well rounded, 

 marked like the spaces betvvecMi the sutures. Aperture suboval, pos- 

 terior angle acute; outer lip thin; columella short, somewhat twi.«!ted 

 and revolute. ))earing u strong ol)li((ue fold a little anterior to its in- 

 sertion: parietal wall covered by a thin callus. 



