116 
MARINE SHELLS OF WEST COAST OF NORTH AMERICA 
Turbonilla painei Dali and Bartsch, 1909 
Plate 50, figs. 4, 4 a 
Bulletin 68, United States National Museum, 71; PI. 5, figs. 4, 4 a. 
Shell very slender, horn-yellow with a chestnut band about two-fifths 
the width of the space between the sutures immediately below the summits, 
and another about one-third as wide dividing the light area of the spire 
into equal parts. Posterior half of base chestnut-brown, anterior horn- 
yellow. Nuclear whorls small, two and one-fourth, depressed helicoid, 
having their axis almost at right angles to that of the succeeding turns, in 
the first of which they are slightly immersed. Post-nuclear whorls slightly 
shouldered at the summit, weakly rounded, marked by strong, well- 
rounded retractive axial ribs, of which 24 occur upon the first, 22 upon the 
second, 20 upon the third to fifth, 22 upon the sixth to penultimate turn. 
Sutures well-impressed, rendered somewhat wavy by the strong termina¬ 
tions of the ribs at the summit of the whorls. Periphery of the base in¬ 
flated, well-rounded. Base moderately long, well-rounded, marked by 
feeble continuations of the axial ribs. Entire surface of the base and spire 
bearing fine, closely crowded, wavy spiral striations. Aperture large; pos¬ 
terior angle acute; outer lip thin, showing the external sculpture and color 
markings within; columella slender, straight, oblique, and slightly revolute. 
Length, 7.3; diameter, 2.2 mm. (Dali and Bartsch.) 
Type in United States National Museum, No. 205952. Type locality, 
near Redondo Beach, California. 
Range. Redondo Beach to San Diego, California. 
Turbonilla keepi Dali and Bartsch, 1909 
Plate 50, fig. 1 
Bulletin 68, United States National Museum, 71; PI. 5, fig. 1. 
Shell elongate-conic, yellowish-white with a brown band about two- 
fifths the width of the space between the sutures, immediately below the 
summits, and one about one-third as wide, a little anterior to the middle of 
the remaining light area. Posterior half of base a little lighter brown than 
the bands between the sutures, grading into white on the anterior half. 
(Nuclear whorls decollated.) Post-nuclear whorls slightly shouldered, 
flattened, somewhat contracted at the periphery, marked by strong, well- 
rounded, almost vertical axial ribs, of which there are 22 upon the fourth 
to sixth, 24 upon the seventh to ninth, 26 upon the tenth, and 30 upon the 
penultimate turn. Intercostal spaces a little narrower than the ribs, well- 
impressed. Sutures strongly impressed, rendered sinuous by the strong 
terminations of the axial ribs at the summits of the whorls. Periphery of 
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