11 
septa equals 6 * 5 mm. The location of the siphuncle is central or slightly 
ventrad of the centre. At the septal neck it contracts to a diameter 
varying from 2*5 mm, to 3 mm. The length of the septal neck varies 
from 1 • 1 mm. to 1 • 3 mm., the height of the enclosing camera varying from 
5 to 6 mm. The maximum diameter of the nummuloidal segments of the 
siphuncle, within the earner se, is somewhere near 5-5 mm., the maximum 
diameter of the conch at this point being 28 mm. The siphuncle formerly 
was filled with calcareous deposits, winch, in vertical section, enclosed 
the septal necks in lunate form, successive lunate deposits meeting slight- 
ly above midheight of the camera, as in typical Actinoceroids. The 
surface of the conch, as far as known, was smooth. 
Named in honour of E. M. Kindle, in recognition of his notable con- 
tributions to Canadian geology 
Remarks. Specimen No. 7978 (A). At present the sutures of the 
septa incline at an angle of 70 degrees with the vertical axis of the conch in 
a direction parallel to the longer lateral axis of the latter. From this it is 
assumed that the inclination of the septa is due to distortion subsequent 
to the death of the animal. The downward curvature of the septa is 
greater on one side of the siphuncle than on the other, in a direction 
parallel to the shorter lateral axis of the conch. This, also, may be due 
to distortion, but that is not so certain. 
Specimen No. 7978a (C) . Specimen having its base still embedded in the 
rock, with a length of 90 mm. exposed, of which the upper 4 camera are 
free and have been sectioned through the siphuncle, vertically. The 
diameter here is estimated at 32 mm. About 6 camera occupy a length 
equal to this diameter. The location of the siphuncle is central, and the 
diameter of its septal neck is 3*5 mm. The length of the septal neck in 
the only camera within which it is clearly exposed is at least 1*5 mm. 
Since the lower margins of these necks curve strongly outward, the con- 
necting rings are assumed to have been nummuloidal. The rate of ex- 
pansion of the conch is at least 6 degrees. 
Locality and Horizon. Two miles northwest of Clementsvale, N.S. 
Lower Devonian. 
Types. Nos. 7978, a, National Museum of Canada. 
Ormoceras novascoticum sp. nov. 
Figure 3, B 
Specimen 85 mm. in length. Near the top of the specimen its maxi- 
mum diameter is 29 mm., and its minimum diameter is 23*5 mm. The 
rate of enlargement of the conch cannot be determined with accuracy, but 
it equals at least 5 degrees in the direction of the minimum diameter. 
About 7-5 camera occur in a length equal to the maximum diameter of 
the conch. The location of the siphuncle is central. The diameter of the 
septal necks varies from 3*3 to 4 mm. where the maximum diameter of 
the conch varies from 26 to 29 mm. The cast of the interior of the 
passage of the siphuncle through the septum equals 2*75 mm., where the 
diameter of the septal neck is 3 • 6 mm. Possibly this is due to the former 
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