THE SMALLER SEA-SHELLS 195 
a length of an inch. Many other species of this 
genus will be found mentioned in the List. 
Fig. 201 
Ocinebra interfossa, Cpr., the Seculp- 
tured Ocinebra, Figure 201, has a small, 
spindle-shaped shell, marked with spiral 
grooves, sharp varices, and deep sutures. 
It varies in color through shades of yel- 
low, gray and brown. 
Figure 202 gives a good idea of the 
shell of Ocinébra lurida, Midd, the Lurid 
Ocinebra. This pretty little shell is 
common at Monterey and other parts of 
the coast. It is spindle-shaped and is 
marked with fine spiral grooves. The 
Fig. 202 
aperture is oval, the canal sometimes open and 
sometimes tubiform. While the spiral lines are 
prominent the transverse sculpturing is faint. The 
color is reddish yellow, though sometimes nearly 
white. At low tide I have found living specimens, 
the size of the figure, clinging to stones. 
Vara ma naa, Cpr, 
shown in Figure 203, 
which is much enlarged, 
has low, rounded, trans- 
verse ribs, not varying 
from suture to suture, and 
regular, spiral lines. 
its: leameth as' 716mm: 
southern. 
Ocinébra michaeli, 
Ford, Michael’s Ocine- 
bra, two good views of 
Fig. 203, x 2 (*) which are shown in Fig- 
