43-2 SMITHSONIAN MISCELLANEOUS COLLECTIONS [VOL. 50 



ward, sculpture consisting of obliquely forward sloping, broad, 

 rounded axial ribs (10 on the penultimate whorl of the type), which 

 are elevated into nodes on the angle, but become obsolete toward the 

 sutures, especially posteriorly, where the whorl is almost free from 

 axial ornamentation ; spiral sculpture almost obsolete, although faint 

 traces of spiral lines are sometimes visible between the ribs and on 

 the anterior portion of the body whorl ; faint lines of growth, still 

 more oblique than the ribs, are visible, especially on the body whorl. 

 Suture distinct, appressed, occasionally slightly undulating. Colu- 

 mella twisted at base and biangularly plicated. Aperture subpyri- 

 form ; canal relatively long for this genus, slender, and strongly 

 recurved ; notch of medium prominence ; inner lip straight, incrusted, 

 with a decided callus at posterior end of aperture. 



Dimensions. — Altitude, 18.5 mm. ; latitude, 6 mm. ; altitude of 

 body whorl, 10 mm. ; longitude of aperture, 4 mm. ; latitude of aper- 

 ture, 2.1 mm; canal, 3.4. 



Notes. — This beautiful little Drillia appears to be more closely 

 related to D. empyrosia Dall than to any other West Coast form, 

 although its nodose whorls suggest D. torosa Carpenter at first sight. 

 It is distinguishable from D. empyrosia by its smaller size, slenderer 

 form, more recurved canal, and obsolete spiral sculpture (D. empy- 

 rosia being quite prominently spirally sculptured, especially on the 

 body whorl). The recurved canal, oblique ribs, and slenderer form 

 of D. waldorfensis separate it at once from D. torosa. D. waldorf- 

 ensis reminds one of D. (Cymotosyrinx) cepynota, var. acila Dall, 

 from the Shell Creek, Florida, Pliocene, but is slenderer and has 

 fewer and more rounded ribs. Named for the type locality, Wal- 

 dorf asphalt mine. 



Type.— Cat. No. 165,270, U. S. N. M. 



Localty. — W'aldorf asphalt mine, 3 miles southeast of Guadalupe, 

 Santa Barbara County, California ; locality No. 4473. 



Horizon. — Fernando formation, lower Pliocene portion. 



BATHYTOMA CARPENTERIANA Gabb, var. FERNANDOANA, 



new variety 



PL LVI, fig. 7 



Description. — Shell averaging about 25 millimeters in altitude, 

 broadly spindle-shaped ; apex in type is imperfect, but from other 

 specimens is known to be subacute. Whorls 4 or 5, more or less 

 angulated, concave in front and convex behind, the anterior margin 

 of each whorl appressed against the lower convex portion of the pre- 

 ceding one ; body whorl similar to others except that it is protracted 



