ao.Uh'i. NOTES O.V PYRAMIDELLID.li—DALL AND BARTSCH. 357 



tal)nlated and crenulated suniinits, crossed by three strong, rounded, 

 sulx'qualh' spaced, spiral keels and rounded axial ri})s between the 

 sutures; the latter extend from the summit to and over the second 

 keel, but not over the sulcus separating this from the third. The 

 junctions of the axial I'ibs and spiral keels form strong tubercles. 

 Sulcus between the second aijd third keel deep, decidedh' deeper than 

 the peripheral sulcus, both of which, as well as the sulci of the base 

 are crossed by minute closeh^ placed, axial raised threads. Base of the 

 last whorl well rounded, somewhat attenuated, marked by live strong, 

 rounded, subequal and subequally spaced spiral keels. Aperture oval, 

 posterior angle acute, outer lip wavy, columella short, curved and 

 slightly revolute, provided with a quite strong oblique fold near its 

 insertion; parietal wall covered by a moderately thick callus. 



The specimen described and ligured belongs to the Pa?tel collection 

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

 long. 3.2 mm.; diam. .8 mm. The U. S. National Museum has a speci- 

 men. No. 185889, from H. Adams, also from Japan. 



ODOSTOMIA (MIRALDA) species? 



The Ptetel collection contains another specimen of Mlralda which is 

 in every way heavier than 0. {M.) diadema A. Adams. It is, how- 

 ever, so badly worn that positive identification at the present time 

 is impossible. It has five post-nuclear whorls and measures: long. 

 ii.2 mm. ; diam. l.-t mm. It is Libeled Mlralda diadema K. Adams, and 

 comes from Japan, but is not that species. 



ODOSTOMIA (MENESTHO) EXARATISSIMA, new name. 



Plate XIX, figs. 3, 7. 



= Menestho exurata A. Adams, Ann. Mag. Nat. Hist., VIII, LSei, ]x ;303, not 

 Parlhenia exarata, Carpenter, 1856. 



Shell elongate-conic, soiled white. Nuclear whorls at least two, 

 moderately large, helicoid, one-half obliquely immersed in the first 

 post-nuclear volution, the periphery projecting slightly beyond the 

 left outline of the spire. Post-nuclear whorls well rounded, very 

 slightly shouldered, marked by faint lines of growth and well incised 

 spiral lines, which are not all of the same strength nor are the}' equally 

 spaced. Six of these appear upon* the second, and seven upon the 

 penultimate whorl between the sutures. Periphery and base of the 

 last whorl well rounded, the latter sculptured like the space between the 

 sutures, bearing six incised lines which are not quite as strong as those 

 between the sutures. Aperture oval, effuse at the junction of the 

 outer lip and the columella, posterior angle obtuse, outer lip thin, but 

 opaque, columella short, curved, somewhat revolute, reenforced by the 

 attenuated base, parietal wall covered by a faint callus. 



