20 PROCEEDINGS OF THE NATIONAL, MUSEUM Vol.70 



being free, provided with a fold at the insertion of the columella; 

 parietal wall covered by a thin callus. 



The type, Cat. No. 347804, U.S.N.M., was taken from Ahalone at 

 Catalina Island by A. M. Strong. It has almost four postnuclear 

 whorls and measures, length, 3.5 mm. ; diameter, 1.8 mm. 



Cat. No. 347805, U.S.N.M., contains 10 additional specimens of 

 various ages from the same gathering, while 63 from the same lot, 

 of different ages, are in Mr. Strong's collection. 



ODOSTOMIA (AMAURA) SANJUANENSIS Bartsch 



Plate 2, fig. 6 



Odosomia (Amaura) sanjuanensis Baktsch, Journ. Wash. Acad. Sci., vol. 

 10, 1920, No. 20, p. 571. 



Shell elongate-ovate, wax yellow. Nuclear whorls decollated. 

 Postnuclear whorls narrowly tabulatedly shouldered, moderately 

 rounded, marked by regular retractively slanting lines of growth and 

 fine spiral striations, which give to the surface a cloth-like texture 

 when subjected to high magnification. In addition to this sculpture, 

 the surface of the shell is marked by strong incremental lines and 

 more or less irregular and irregularly distributed spiral threads, 

 which produce a malleated pattern. Suture strongly marked 

 Periphery of the last whorl well rounded. Base moderately long, 

 well rounded, marked like the spire. Aperture obliquely ovate ; pos- 

 terior angle obtuse; outer lip thin; inner lip very obliquely retrac- 

 tively slanting, somewhat flexuouse and provided with a strong fold 

 at its insertion ; parietal wall covered by a thin callus. 



The type. Cat. No. 334491, U.S.N.M., was collected by Dr. C. C. 

 Engberg near San Juan Island, Gulf of Georgia. It has five and one- 

 half whorls and measures, altitude, 7.2 mm.; diameter, 3.5 mm. 

 Another specimen from the same locality is in Doctor Engberg's col- 

 lection. 



Cat. No. 340880, U.S.N.M., contains four specimens collected by 

 Doctor Engberg at Olga, Washington. Cat. No. 340881, U.S.N.M., 

 contains five specimens collected by Doctor Engberg at Washington. 

 Fifteen more specimens are in the Engberg collection. Cat. No. 

 347293, U.S.N.M., contains 50 specimens collected by Doctor Engberg 

 at Sinclair Island, Washington. Many more from the same station 

 are in Doctor Engberg's collection. 



ODOSTOMIA (AMAURA) WASHINGTONA, new species 



Plate 4, fig. 10 



Shell rather large, turreted, broadly elongate-conic. Nuclear 

 whorls decollated. Postnuclear whorls broadly, tabulatedly shoul- 



