WEST AMEKICAN PYEAMTDELLID MOLLUSKS. 71 



surface of the base and spire marked by numerous fine, wavy, closely 

 spaced spiral striations. Aperture oval; posterior angle acute; outer 

 lip tliin, showing the external sculpture within; also three bands of 

 color upon a bluish-white surface, one immediately below the sum- 

 mit, another covering the part corresponding to posterior half of the 

 base, and a narrow one dividing the space between these two areas 

 in equal halves; columella curved, moderately strong, and revolute. 

 The specimen described and figured (Cat. no. 15315, U.S.N.M.) 

 was collected by J. C. Cooper at San Pedro, CaUfomia. It has 12 

 post-nuclear whorls and measures: Length 14 mm., diameter 3.6 mm. 



TURBONILLA (PYRGOLAMPROS) PAINEI, new species. 

 Plate 5, figs. 4, 4a. 



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, hehcoid, having their axis almost at right angles 

 to that of the succeeding turns, in the first of wliich the}' 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, and 22 upon the sixth to penultimate turn. Sutures 

 well impressed, rendered somewhat wavy by the strong terminations 

 of the ribs at the summit of the whorls. Periphery of the base 

 inflated, well rounded. Base moderately long, well rounded, marked 

 by the feeble continuations of the axial ribs. Entire surface of base 

 and spire bearing fine, closely crowded, wav}^ spiral striations. Aper- 

 ture large; posterior angle acute; outer lip thin, showing the external 

 sculpture and color markings ^^^thin; columella slender, straight, 

 oblique, and sHghtly revolute. 



The t3rpe (Cat. no. 205952, U.S.N.M.) was collected near Redondo, 

 Cahfomia. It has nine post-nuclear whorls and measures: Length 

 7.3 mm., diameter 2.2 mm. Cat. no. 171911, U.S.N.M., contains 

 another specimen collected by S. S. Berry and J. H. Paine in 50 fathoms 

 off Avalon, Catahna Island. Cat. no. 205953, U.S.N.M., one speci- 

 men collected by Mr. F. W. Kelsey in 35 fathoms off Coronado Hotel, 

 San Diego; and Cat. no. 203507, U.S.N.M., one specimen collected 

 by Mr. C. W. Gripp at San Diego, California. 



Named for J. H. Paine. 



TURBONILLA (PYRGOLAMPROS) KEEPI, new species. 



Plate 5, fig. 1. 



Shell elongate-conic, j^ellowish-white with a brown band about 

 two-fifths the width of the space between the sutures, immediately 



