PLATE VI.— Continued 
'W 
Fig. 9. CALICULOSPONGIA PAUPER gen. et sp. nov, p 348 
A, natural size, with cloacal cup at top seen diagonally from 
the side; B, same, with cloacal cup seen from the front, enlarged 
3 diameters; C, same, viewed from the opposite side, showing 
the tortuous canals, enlarged 3 diameters. From the upper 
part of the Trenton group, along the belt line railroad at the 
Magoffin place, in Lexington, Kentucky. 
ENDOCERAS sp p 339 
One of two specimens labelled Colpoceras arcuatum in the James 
collection at Chicago University and numbered 657. This speci- 
men evidently is a siphuncle which tapers so much less than the 
type described by James that it must belong to a different 
species.. The type of Colpoceras arcuatum also consisted of 
a siphuncle of some species of Endoceras. From the lower part 
of the Maysville group, at Cincinnati, Ohio. 
PLATE VII 
Fig. 1. WHITELLA CUNEIFORMIS Miller p 323 
Type of Orthodesma and Sphenolium cuneiforme Miller, No. 
8803, in the Faber collection at Chicago University. A, right 
valve, imperfect, especially along the anterior and posterior 
margins; B, same, dorsal view; c, an attempt at a restoration of 
^the original form of the type. Versailles, Indiana, probably 
from the Waynesville member of the Richmond group. 
Fig. 2. WHITELLA RICHMONDENSIS Miller p 324 
Type of Sphenolium richmondense Miller, No. 8800, in the 
, Faber collection at Chicago University. Imperfect, especially 
posteriorly. A, right valve; B, same specimen, dorsal view; C, 
an attempt at a restoration of the original form of the type. 
Richmond, Indiana, probably from the Whitewater member 
of the Richmond group. 
Fig. 3. CYRTODONTA CUNEATA Miller p 326 
Type of Angellum cuneatum Miller, No. 8815, in the Faber 
collection at Chicago University. Imperfect, and artificially 
carved so that it may never be possible to identify the species. 
Especially imperfect along the anterior and posterior margins. 
A, anterior view; B, lateral view; C, dorsal view; D, an attempt 
at a restoration of the original form of the type, excepting at 
at the anterior extremity. Richmond, Indiana, probably from 
the Whitewater member of the Richmond group. 
Fig. 10. 
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