PLATE XCII. 
CycapeLta KNowLTontana Ward...-.2---2-222-022 eee eee eee ee eee eee 396 
Fig. 1. View of the lower transverse fracture of No. 500.62 of the Museum 
of the University of Wyoming, showing the leaf bases and walls in longi- 
tudinal section overlain by the outer coating. 
Fig. 2. View of the polished surface of the upper transverse fracture. of No. 
500.76, showing the attachment of the armor to the axis, the leaf bases 
emitting the ramentaceous chaff to form the walls and outer layer. 
574 
