6 PROCEEDINGS OF THE NATIONAL MUSEUM Vol. 70 



appressed at the summit, marked by broad, slightly protractively 

 slanting axial ribs, of which 14 occur upon all of the remaining turns, 

 except the last, on which there are 16. These ribs are a little broader 

 than the sj)aces that separate them, and they become slightly flat- 

 tened and weaker toward the summit. The intercostal spaces are 

 deeply depressed pits, which terminate somewhat posterior to the 

 summit of the succeeding turn, leaving a broad, smooth band at the 

 suture. Suture strongly constricted. Periphery of the last whorl 

 well rounded, not crossed by the strong axial ribs. Base short, well 

 rounded, marked by incremental lines only. Aperture subquadrate, 

 jjosterior angle obtuse; outer lip thin; inner lip slightly sinuous, 

 decidedly obliquely inserted, the inner edge having a decidedly pro- 

 tractive slant; parietal wall devoid of callus. 



The type. Cat. No. 334489, U.S.N.M., was collected by Dr. C. C. 

 Engberg at San Juan Island, in the Gulf of Georgia. It has almost 

 eight whorls remaining and measures, altitude, 3.7 mm.; diameter, 

 1.1 mm. Cat. No. 363782, U.S.N.M., contains a paratype from the 

 same source. Four additional specimens from the same station are 

 in Doctor Engberg's collection. 



Cat. No. 347292, U.S.N.M., contains a specimen collected by Doctor 

 Engberg in Friday Harbor, Washingion, and Cat. No. 340866, 

 U.S.N.M., contains 8 specimens from Washington without specific 

 locality, also from Doctor Engberg; 10 more from the same station 

 are in the Engberg collection. 



This species occurs considerably farther north than any heretofore 

 known Chemnitzia. 



TURBONILLA (PRTGOLAMPROS) STELLERI. new species 



Plate 2, fig. 4 



Shell very regularly elongate-conic, flesh colored, with a broad zone 

 of pale brown which extends from a little anterior to the periphery 

 on the base posteriorly over half of the whorl. Nuclear whorls 

 decollated. Postnuclear whorls appressed at the summit, which is 

 very narrowly shouldered, decidedly flattened in the middle, and 

 moderately constricted at the suture, marked by very regular, vertical 

 axial ribs, of which 16 occur upon all but the last two turns, on which 

 18 are present. These ribs are about as wide as the spaces that 

 separate them, on the first three turns; on the middle turns they are 

 only half as wide, while on the last turn the intercostal spaces are 

 about one and one-half times as wide as the ribs. In addition to the 

 axial ribs the whorls are marked by fine lines of growth and numer- 

 ous, very closely spaced spiral striations, which extend over both 

 ribs and intercostal spaces. Periphery of the last whorl well 

 rounded. Base short, well rounded, marked by the feeble continua- 



