NO. 1452. NOTES ox PYRAMIDELLID.E—DALL AND BARTSCIL 347 



first post-nuclear whorl. Periphery of the last whorl anoular. Base 

 very short, almost Hat, marked l)y faint continuations of the axial ribs 

 and twelve wavy, spiral lirations which are separated by channels of 

 about the same width; both lirations and channels are widest at the 

 periphery and g-radually become smaller toward the umbilical area. 

 Aperture rather small, subquadrate, posterior ang-le obtuse, outer lip 

 thin, showing" the external sculpture within; columella straig-ht, slender, 

 and somewhat revolute; columellar fold not apparent in the aperture; 

 parietal wall covered by a mere film of callus. 



The type has nine and one-eighth post-nuclear whorls and measures: 

 long. 7.5 mm.; diam. 2.3 mm. It belongs to the P{\?tel collection and 

 comes from .lapan. It was labeled 3lor?nula elongata H. Adams, which 

 was evidentl}" intended for Turhonilla {Laiicea) elongata Pease, as A. 

 Adams has not described a T. elongata. The present species strongly 

 recalls T. {Lancea) ^jt^«.S'6/, but differs from it in nuclear structure, in 

 the number of alternating* raised and depressed spiral area and in 

 the structure of the base which in peasei is sculptured like the space 

 between the sutures. 



TURBONILLA (LANCELLA) PEASEI, new name. 



= TurhonlIh( (Lancea) elongata Pease, Am. Jour. Conch., Ill, 1868, p. 293, pi. 

 XXIV, fig. 22. Not Turhonilla elongata Koninck, 1841; nor Chemnitzia elongata 

 Philippi, 1844; nor Chemnitzia humboldliana elongata Requien 1848. Tur- 

 bonilla {Lanrella) pea.sei is the type of the subgenus Lancella. 



BABELLA, new subgenus. 



Shell with strong- axial ribs between the sutures and three spiral 

 keels, two of which are at the periphery, which falls in the deep sulcus 

 between them, and one a little anterior to the middle of the base. 



Type. — TnrhonUla {BaheJla) eielatl<n\ new name. 



TURBONILLA (BABELLA) CiELATIOR, new name. 



Plate XVII, fig. 9. 



Parthenia c.rlata A. Adams, Jour. Linn. Soc. London, YII, 1863, p. 4; not Tur- 

 bonilla cniata, Gould, Proc. Host. Soc. Nat. Hist., VII, 1861, p. 406; nor 

 Chemnitzia arlata Carpenter, Ann. Mag. Nat. Hist., XV, 1865, p. 400, which 

 may be called liypontrta. 



Shell elongate-conic, turrited, milk-white. Nuclear whorls small, 

 three, helicoid, rather loosely coiled and elevated, having their axis at 

 a right angle to the axis of the later whorls and about one-third 

 immersed in the first of tliem. Post-nuclear whorls flattened, strongly 

 sculptured, with axial ribs and three spiral keels. There is a strong, 

 rounded, rather broad spiral keel on each side of the deeply sulcate 

 periphery; the peripheral sulcus is about as wide as a keel and marks 

 the path for the shouldered and crenulated summit of the succeeding 

 whorls. A second deep spiral sulcus, equal in width to the peripheral 



