80 



BULLETIN 68, UNITED STATES NATIONAL MUSEUM. 



more distantly sjjacecl, and six fine incised lines wliicli divide the 

 space posterior to the last groove. Sutures somewhat constricted. 

 Peripher}^ of the last whorl well rounded. Base short, well rounded, 

 marked by nine slender incised spiral lines, which are successively a 

 little closer spaced from the periphery to the umbiHcal region. 

 Aperture rhomboid; posterior angle obtuse; outer lip thin, showing 

 the external marldngs within; columella slender, somewhat curved 

 and sUghtly re volute. 



The type (Cat. no. 160067 U.S.N.M.) was dredged by Mr. F. W. 

 Kelsey in twenty fathoms off San Diego. It has eleven post-nuclear 

 whorls and measures: Length 12.3 mm., diameter 1.6 mm. 



Named for Prof. C. C. Nutting. 



The following specimens have been examined: 



TURBONn^LA (PYRGISCUS) CALLIA, new species. 



Plate 7, fig. 4. 



Shell elongate-conic, yellowish-wliite. Nuclear whorls decollated. 

 Post-nuclear whorls moderately well rounded, ornamented by rather 

 weak, sHghtly protractive, axial ribs, of wliich 16 occur upon the first 

 four of the remaining turns and 18 upon the rest. Intercostal spaces 

 shallow, double the width of the ribs, marked by two lines of pits, one 

 of which is at the periphery, the other a Httle posterior to the middle 

 of the whorls and a series of finer incised lines of which seven irreg- 

 ularly spaced ones occur between the two rows of pits and four 

 between the upper row^ of pits and the summit. Sutures well impressed. 

 Peripher}^ of the last whorl well rounded. Base short, well rounded, 

 marked by several well incised spiral striations. Aj^erture subquad- 

 rate; posterior angle obtuse; outer hp thin, strongly bent at its 

 anterior margin; columella short, twisted and slightly revolute. 



The type (Cat. no. 205936, U.S.N.M.) was collected at San Diego, 

 CaUfornia. It has lost the early whorls. The nine remaining 

 measure: Length 4.7 mm., diameter 1.4 mm. 



TURBONILLA (PYRGISCUS) SUPERBA, new species. 

 Plate 7, figs. 10, 10a. 



Shell elongate-conic, pale yellow with a darker broad yellow band 

 a little posterior to the middle of the whorls between the sutures, 

 and another of about equal width at the periphery. Nuclear whorls 



