488 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. 41. 



CINGULA KATHERIN.S, new species. 



Plate 41, figure 3. 



Shell subglobose, dark brown. Nuclear whorls about one and one- 

 quarter, well rounded, smooth. Post-nuclear whorls strongly, round- 

 edly shouldered at the summit, well rounded on the sides, marked by 

 fine, incremental lines only. Suture strongly constricted. Periphery 

 of the last whorl inflated. Base moderately long, well rounded, nar- 

 rowly umbiHcated, smooth excepting incremental lines. Aperture 

 large, obhque, broadly oval; outer lip thin; columella curved and 

 slightly reflected; parietal wall covered with a tliick callus which 

 renders the peritreme complete. 



The type (Cat. No. 206103, U.S.N.M.) was collected by Mrs. Kate 

 Stephens, for whom it is named, at Windfall Harbor, Admiralty 

 Islands, Alaska. It has tln^ee post-nuclear whorls, and measures: 

 Length 2.7 mm., diameter 2 mm. 



CINGULA MONTEREYENSIS, new species. 

 Plate 41, figure 1. 



Shell elongate-conic, light brown. Nuclear whorls one and one- 

 half, well rounded, smooth. Post-nuclear whorls appressed at the 

 summit, moderately rounded, marked by fine, mcremental lines only. 

 Suture only slightly constricted. Periphery of the last whorl some- 

 what inflated, well rounded, with a very narrow umbilical cliink, 

 smooth excepting fine, incremental Unes. Aperture broadly oval, 

 somewhat effuse anteriorly; posterior angle obtuse; outer hp thin; 

 columella curved; parietal wall glazed with a moderately strong callus, 

 which joins the posterior angle of the aperture with the insertion of 

 the columella. 



The type (Cat. No. 127547, U.S.N.M.) and four specimens come 

 from Monterey, California. The type has five and a half post-nuclear 

 whorls, and measures: Length 4 mm., diameter 2.1 mm. 



EXPLANATION OF PLATE 41. 



Fig. 1. — Cingulamontereyensis Baxhich. Type. Long. 4 mm.; p. 488. 

 2. — Cingula aleutica Dall. Type. Long. 3.2 mm.; p. 487. 

 3. — Cingula katherinas Bartsch.. Type. Long. 2.7 mm.; p. 488. 

 4. — Cingula alashana Bartsch.. Type. Long. 2.6 mm.; p. 486. 

 5.— Cingula martyni Dall. Type. Long. 5 mm.; p. 485. 

 6. — Cingula martyni scipio Dall. Type. Long. 4 mm.; p. 486. 



