CLASS SCAPHOPODA 
15 
less dorsally. Aperture with simple, thin periostome; anal orifice compara¬ 
tively large, with simple edge, contracted by a wide circular callus or ledge 
just within the opening. (Tryon and Pilsbry, Manual of Conchology.) 
Type. Dentalium ovulum Philippi. 
Distribution. Mediterranean, North Atlantic, North Pacific, Cali¬ 
fornia. 
Cadulus fusiformis Pilsbry and Sharp, 1898 
Plate 1, fig. 4 
Tryon and Pilsbry, Manual of Conchology, 17:193; PI. 35, fig. 14. 
Shell but little curved, long and slender, the greatest diameter con¬ 
tained about 9 times in the length of the shell; swelling hardly perceptible, 
the tube very gradually enlarging from the small apex to the beginning 
of the last third of the length; thence an equal size is maintained almost 
to the aperture, just before which it is gently but quite perceptibly 
contracted on all sides. Surface smooth and glossy, bluish-white, 
scarcely translucent, with oblique rings of more opaque white, and near the 
apex some longitudinal white lines; a pellucid ring bordering the lip-edge, 
behind which there is a short, opaque, white tract, passing gradually into 
the bluish and banded general color. Tube a mere trifle compressed ver¬ 
tically at the widest part. Aperture oblique, and (measured obliquely) a 
trifle longer than wide (in the ratio of 35:33) ; lip thin, sharp. Anal orifice 
circular and simple. Length, 10.37; antero-posterior diameter at aperture, 
1; at widest, 1.14; at apex, 0.37; greatest transverse diameter, 1.17 mm. 
(Pilsbry and Sharp.) 
Type in United States National Museum, No. 133809. Type locality, 
San Pedro, California. 
Range. Monterey, California, to Cape San Lucas, Lower California. 
Fossil: Pliocene, San Diego well. 
Cadulus hepburni Dali, 1897 
Plate 1, fig. 13 
Bulletin , Natural History Society of British Columbia, No. 2:12; PI. 1, fig. 13. 
Shell small, polished, smooth, white, nearly straight; apertures circular, 
their margins simple. Length of shell, 11 ; diameter at anterior end, 1.25; 
at posterior end, 0.75 mm. (Dali.) 
Type in Ottawa. Type locality, near Victoria, Vancouver Island, in 
60 fathoms. 
Range. Victoria, British Columbia, to Monterey, California. 
[151 
