254 E. A. ANDREWS 
the external mass, just as in fig. 7. In the interior some of the 
glands are very large. The section distal to this, (fig. 9) shows 
the bottom of the groove receded from the surface and constricted 
from the rest by the continuation of the lip so that it forms a 
rather elliptical hole with only a very narrow slit opening into the 
deep groove that is seen from the surface. This surface groove 
is bounded on the left by the greatly thickened shell substance of 
the median mass and on the right by the thick shell of the external 
Fig.9 Cross section of the same at the level 9, showing also the grasping second 
stylet, above, and its wedge, to the left, where it is entering into the groove of 
the spiral. 2. 90 mm. A. 
Fig. 10 Cross section of the same at the level 10, showing the bottom of the 
groove cut off by the shelf from the external mass. 2. 90mm. A. 
Fig. 11 Cross section of the same, at the level 11, showing, above, the base of 
the spatula. 2. 90mm. A. 
