12 
presence here of a calcareous deposit lining the inner surface of the 
septal neck. The length of the septal neck is about 0*6 mm. The sur- 
face of the shell, apparently, was smooth. 
Remarks. Specimen No. 7979 (B). This specimen is distinguished 
from typical Ormoceras kindlei by its distinctly shorter septal necks. The 
strongly outward curved lower margins of the septal necks indicate the 
presence of nummuloidal connecting rings, probably at least 5-5 mm. in 
diameter at mid-height. 
A second specimen, about 70 mm. in length, is still embedded in the 
rock, weathered so as to show a vertical section through a part of the 
conch. Six camerse occur in a length equal to the diameter of the conch. 
The septal necks are 3 mm. in diameter where the diameter of the conch 
is 23 mm. These septal necks are very short, as in typical Ormoceras 
novascoticum. The nummuloid character of the segments of the siphuncle 
is indicated at the base of the cast of the interior of the specimen. 
Specimen No. 7979a, National Museum of Canada. 
A third specimen is about 55 mm. in length along one side of the 
strongly distorted specimen. Diameter 36 mm. About 7 camerse occur 
in a length corresponding to this diameter. The septal necks are 3 mm. 
in diameter, and apparently are as short as in typical Ormoceras novas - 
coticum. Specimen No. 7979b, National Museum of Canada. 
Locality and Horizon. Two miles northwest of Clementsvale, N.S. 
Lower Devonian. 
Types. Nos. 7979, a, b, National Museum of Canada. 
Ormoceras brevicameratum sp. nov. 
Figure 3, J and M 
Specimen about 60 mm. in length. In its present condition its cross- 
section is elliptical. About 22 mm. above its base its maximum diameter 
is 35 mm. and its minimum diameter 23 mm. Its apical angle parallel 
to its maximum diameter is about 13 degrees. Beneath the point where 
its maximum diameter is 34*5 mm,, there are 7 camerse in a length of 19 
mm. ; from this it is estimated that there were at least 13 camerse in a 
length equal to the maximum diameter of the conch, when this diameter is 
measured at 31 mm. in length. The surface of the shell is ornamented by 
transverse striae, varying from 8-5 to 11 in a length of 5 mm. 
Remarks. Specimen 7980a (M). This specimen differs from the 
preceding two species in its greater apical angle and in the relatively greater 
number of its camerse in a length equal to the diameter of the conch. 
Moreover, the surface of the shell is striated transversely. 
A second specimen is 45 mm, in length, enlarging from a maximum 
diameter of 18 mm. at its base to 25 mm. at a point 33 mm. farther up, 
indicating an apical angle of 12 degrees in this direction. Where the 
maximum diameter is 25 mm., the minimum diameter is 18 mm. Eleven 
camerse occur in a length equal to the maximum diameter of the conch. 
This specimen is a cavity left in the rock by the removal of the conch by 
weathering. 
