210 
AUG. F. FOERSTE 
26. Conularia sp. 
Plate XXI, fig. 9; plate XXII, fig. 9 A, B 
Half a dozen fragments of some very thin-shelled Conularia, 
rolled up into a more or less tubular form, were found within 
the living chamber of some Orthoceroid shell. The fragments 
are enrolled laterally. This is indicated by a narrow dark brown 
line extending lengthwise down the enrolled fragments. The 
width of this line is approximately | mm. Along this line the 
inner side of the shell is supported by a narrow sharp septal 
ridge, extending about i mm. from the wall of the shell inward. 
This septal ridge is colored deep brown, and it is the color of this 
ridge which is seen through the thin wall of the shell itself and 
which forms the narrow dark brown line as seen on the exterior 
of the shell. Possibly a minute tube may have run down the 
interior of this septal ridge, close to the wall of the shell, but 
this could not be determined beyond all doubt. In order to 
conform with Conularia of the C. heymani type, a second brown- 
ish line ought to extend down the tubular fragments, parallel to 
the brownish line actually found, but in none of the fragments 
was a second line found. However, since in no case a sufficient 
width of surface was exposed on both sides of the brownish line 
actually present, it is not possible to determine definitely either 
the presence or absence of such a second parallel brownish line. 
Judging from analogy with Conularia heymani, it is here assumed 
that the second brownish line should occur in specimens showing 
a sufficient width of the original shell wall. 
The longest enrolled fragment is 26 mm. long, and the various 
fragments are enrolled so as to produce the appearance of tubes 
about 4 or 5 mm. in diameter. All of the so-called tubes are 
more or less crushed and have their enrolled margins more or 
less separated. 
The surface is ornamented by minute granules, about a 0.05 
mm. in diameter. These granules are arranged both in trans- 
verse and in vertical rows. In the transverse rows 10 to 13 
granules occupy a width of one millimeter, and in the vertical 
rows usually about 8 granules occupy the same length, although 
