104 PALAEONTOLOGY OF CALIFOKNIA. 



The low spire, the channelling of the suture, the posterior notch, the heavy in- 

 crustation of the inner lip, and the ahsence of crenulation on the inner surface 

 of the outer lip, distinguish it sufficiently. 

 Named in honor of Prof. J. D. Whitney. 



W. ficus, n. s. 



PL 28, Fig. 216. 



Shell pyriform or fig-shaped; spire low, whorls four and a 

 half; suture channelled or impressed. Mouth elongate, narrowed 

 in front; outer lip simple, inner lip covered by a rather heavy 

 callus; canal twisted, and with two oblique folds below, the lower 

 of which is the most prominent, placed at the base of the colu- 

 mella, and extending to the end of the canal. Surface marked 

 by fine revolving lines, least prominent on the middle of the 

 whorl ; upper whorls longitudinally plicated. 



Figure, slightly magnified. 



Locality; Abundant near Fort Tejon. (Division B.) 



MORIO, Montf. 



Subgen. SCONSIA, Gray. 



M. TUBERCULATUM, n. S. 

 PI. 19, Fig. 57. 



Shell short, robust, thin; whorls seven, spire low. Surface 

 marked by two, rarely three, rows of small tubercles; two bound- 

 ing the widest portion of the volution, with a plane or slightly 

 concave surface between them ; the third, which occurs rarely, is 

 placed below the others: besides these, the whole surface is or- 

 namented by fine revolving striae. Aperture broad; outer lip 

 thick, longitudinally striate externally, inner surface crenulate; 

 columellar lip covered by a broad plate, plicate or crenulate 

 anteriorly. Canal strongly recurved. A distinct varix, nearly 

 as large as the outer lip, occurs on the body whorl, and some- 



